OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 1 of 14
Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
PRODUCT NAME
OXALIC ACID
SYNONYMS
(COOH)2.2H2O, (HO)3-C-C-(OH)3, C2-H2-O4, HOOC-COOH, "ethanedionic acid",
"ethanedioic acid", "oxalic acid anhydrous", "oxalic acid dihydrate",
"ortho-oxalic acid"
PROPER SHIPPING NAME
CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.
Edit
PRODUCT USE
Major use in textile finishing, stripping cleaning, calico printing, dyeing.
Rust stain removal; metal and equipment cleaning. Timber bleach. Dye
manufacture; in the paper, ceramics, photography and rubber industries.
SUPPLIER
Company: Quantum Chemicals Pty Ltd
Address:
70 Quantum Close
Quantum Industrial Park
Dandenong South VIC 3175
Australia
Telephone: 1300 782 688
Emergency Tel: 1300 131 001
Fax: 1300 782 699
HAZARD RATINGS
Flammability
Toxicity
Body Contact
Reactivity
Chronic
SCALE: Min/Nil=0 Low=1 Moderate=2 High=3 Extreme=4
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 2 of 14
Section 2 - HAZARDS IDENTIFICATION
STATEMENT OF HAZARDOUS NATURE
HAZARDOUS SUBSTANCE. DANGEROUS GOODS. According to the
Criteria of NOHSC, and the ADG Code.
POISONS SCHEDULE
S6
RISK
Harmful in contact with skin and if swallowed.
Causes burns.
Risk of serious damage to eyes.
Cumulative effects may result following exposure*.
* (limited evidence).
SAFETY
Do not breathe dust.
Wear eye/face protection.
Take off immediately all contaminated clothing.
In case of contact with eyes, rinse with plenty of water and contact Doctor or
Poisons Information Centre.
Section 3 - COMPOSITION / INFORMATION ON INGREDIENTS
NAME CAS RN %
oxalic acid 144-62-7 > 99
Section 4 - FIRST AID MEASURES
SWALLOWED
鈥? For advice, contact a Poisons Information Centre or a doctor at once.
鈥? Urgent hospital treatment is likely to be needed.
鈥? If swallowed do NOT induce vomiting.
鈥? If vomiting occurs, lean patient forward or place on left side (head-down
position, if possible) to maintain open airway and prevent aspiration.
鈥? Observe the patient carefully.
鈥? Never give liquid to a person showing signs of being sleepy or with reduced
awareness; i.e. becoming unconscious.
鈥? Give water to rinse out mouth, then provide liquid slowly and as much as
casualty can comfortably drink.
鈥? Transport to hospital or doctor without delay.
EYE
If this product comes in contact with the eyes:
鈥? Immediately hold eyelids apart and flush the eye continuously with running
water.
鈥? Ensure complete irrigation of the eye by keeping eyelids apart and away from
eye and moving the eyelids by occasionally lifting the upper and lower lids.
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 3 of 14
Section 4 - FIRST AID MEASURES
鈥? Continue flushing until advised to stop by the Poisons Information Centre or a
doctor, or for at least 15 minutes.
鈥? Transport to hospital or doctor without delay.
鈥? Removal of contact lenses after an eye injury should only be undertaken by
skilled personnel.
SKIN
If skin contact occurs:
鈥? Immediately remove all contaminated clothing, including footwear
鈥? Flush skin and hair with running water (and soap if available).
鈥? Seek medical attention in event of irritation.
INHALED
鈥? If fumes or combustion products are inhaled remove from contaminated area.
鈥? Lay patient down. Keep warm and rested.
鈥? Prostheses such as false teeth, which may block airway, should be removed,
where possible, prior to initiating first aid procedures.
鈥? Apply artificial respiration if not breathing, preferably with a demand valve
resuscitator, bag-valve mask device, or pocket mask as trained. Perform CPR if
necessary.
鈥? Transport to hospital, or doctor, without delay.
NOTES TO PHYSICIAN
for corrosives:
--------------------------------------------------------------
BASIC TREATMENT
--------------------------------------------------------------
鈥? Establish a patent airway with suction where necessary.
鈥? Watch for signs of respiratory insufficiency and assist ventilation as
necessary.
鈥? Administer oxygen by non-rebreather mask at 10 to 15 l/min.
鈥? Monitor and treat, where necessary, for pulmonary oedema .
鈥? Monitor and treat, where necessary, for shock.
鈥? Anticipate seizures.
鈥? Where eyes have been exposed, flush immediately with water and continue to
irrigate with normal saline during transport to hospital.
鈥? DO NOT use emetics. Where ingestion is suspected rinse mouth and give up to
200 ml water (5 ml/kg recommended) for dilution where patient is able to
swallow, has a strong gag reflex and does not drool.
鈥? Skin burns should be covered with dry, sterile bandages, following
decontamination.
鈥? DO NOT attempt neutralisation as exothermic reaction may occur.
--------------------------------------------------------------
ADVANCED TREATMENT
--------------------------------------------------------------
鈥? Consider orotracheal or nasotracheal intubation for airway control in
unconscious patient or where respiratory arrest has occurred.
鈥? Positive-pressure ventilation using a bag-valve mask might be of use.
鈥? Monitor and treat, where necessary, for arrhythmias.
鈥? Start an IV D5W TKO. If signs of hypovolaemia are present use lactated Ringers
solution. Fluid overload might create complications.
鈥? Drug therapy should be considered for pulmonary oedema.
鈥? Hypotension with signs of hypovolaemia requires the cautious administration of
fluids. Fluid overload might create complications.
鈥? Treat seizures with diazepam.
鈥? Proparacaine hydrochloride should be used to assist eye irrigation.
--------------------------------------------------------------
EMERGENCY DEPARTMENT
--------------------------------------------------------------
鈥? Laboratory analysis of complete blood count, serum electrolytes, BUN,
creatinine, glucose, urinalysis, baseline for serum aminotransferases (ALT and
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 4 of 14
Section 4 - FIRST AID MEASURES
AST), calcium, phosphorus and magnesium, may assist in establishing a treatment
regime.
鈥? Positive end-expiratory pressure (PEEP)-assisted ventilation may be required
for acute parenchymal injury or adult respiratory distress syndrome.
鈥? Consider endoscopy to evaluate oral injury.
鈥? Consult a toxicologist as necessary.
BRONSTEIN, A.C. and CURRANCE, P.L. EMERGENCY CARE FOR HAZARDOUS MATERIALS
EXPOSURE: 2nd Ed. 1994.
Effective therapy against burns from oxalic acid involves replacement of
calcium.
Intravenous oxalic acid is substantially excreted (88% - 90%) in the urine
within 36 hours.
Section 5 - FIRE FIGHTING MEASURES
EXTINGUISHING MEDIA
鈥? Water spray or fog.
鈥? Foam.
鈥? Dry chemical powder.
鈥? BCF (where regulations permit).
鈥? Carbon dioxide.
FIRE FIGHTING
鈥? Alert Fire Brigade and tell them location and nature of hazard.
鈥? Wear full body protective clothing with breathing apparatus.
鈥? Prevent, by any means available, spillage from entering drains or water
course.
鈥? Use fire fighting procedures suitable for surrounding area.
鈥? Do not approach containers suspected to be hot.
鈥? Cool fire exposed containers with water spray from a protected location.
鈥? If safe to do so, remove containers from path of fire.
鈥? Equipment should be thoroughly decontaminated after use.
FIRE/EXPLOSION HAZARD
鈥? Combustible solid which burns but propagates flame with difficulty.
鈥? Avoid generating dust, particularly clouds of dust in a confined or
unventilated space as dusts may form an explosive mixture with air, and any
source of ignition, i.e. flame or spark, will cause fire or explosion. Dust
clouds generated by the fine grinding of the solid are a particular hazard;
accumulations of fine dust may burn rapidly and fiercely if ignited.
鈥? Dry dust can be charged electrostatically by turbulence, pneumatic transport,
pouring, in exhaust ducts and during transport.
鈥? Build-up of electrostatic charge may be prevented by bonding and grounding.
鈥? Powder handling equipment such as dust collectors, dryers and mills may
require additional protection measures such as explosion venting.
鈥? All movable parts coming in contact with this material should have a speed of
less than 1-meter/sec.
May emit corrosive fumes.
FIRE INCOMPATIBILITY
Avoid strong bases.
HAZCHEM
2X
Personal Protective Equipment
Breathing apparatus.
Gas tight chemical resistant suit.
Limit exposure duration to 1 BA set30 mins.
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 5 of 14
Section 6 - ACCIDENTAL RELEASE MEASURES
EMERGENCY PROCEDURES
MINOR SPILLS
鈥? Remove all ignition sources.
鈥? Clean up all spills immediately.
鈥? Avoid contact with skin and eyes.
鈥? Control personal contact by using protective equipment.
鈥? Use dry clean up procedures and avoid generating dust.
鈥? Place in a suitable labelled container for waste disposal.
MAJOR SPILLS
鈥? Clear area of personnel and move upwind.
鈥? Alert Fire Brigade and tell them location and nature of hazard.
鈥? Wear full body protective clothing with breathing apparatus.
鈥? Prevent, by any means available, spillage from entering drains or water
course.
鈥? Consider evacuation (or protect in place).
鈥? Stop leak if safe to do so.
鈥? Contain spill with sand, earth or vermiculite.
鈥? Collect recoverable product into labelled containers for recycling.
鈥? Neutralise/decontaminate residue.
鈥? Collect solid residues and seal in labelled drums for disposal.
鈥? Wash area and prevent runoff into drains.
鈥? After clean up operations, decontaminate and launder all protective clothing
and equipment before storing and re-using.
鈥? If contamination of drains or waterways occurs, advise emergency services.
PROTECTIVE ACTIONS FOR SPILL
PROTECTIVE ACTION ZONE
half
evacuation
downwind
direction
distance
down wind distance
wind isolation
distance
direction
half
evacuation downwind
INITIAL direction distance
ISOLATION
ZONE
From IERG (Canada/Australia)
Isolation Distance 25 metres
Downwind Protection Distance 250 metres
IERG Number 36
FOOTNOTES
1 PROTECTIVE ACTION ZONE is defined as the area in which people are at risk
of harmful exposure. This zone assumes that random changes in wind direction
confines the vapour plume to an area within 30 degrees on either side of the
predominant wind direction, resulting in a crosswind protective action distance
equal to the downwind protective action distance.
2 PROTECTIVE ACTIONS should be initiated to the extent possible, beginning with
those closest to the spill and working away from the site in the downwind
direction. Within the protective action zone a level of vapour concentration
may exist resulting in nearly all unprotected persons becoming incapacitated
and unable to take protective action and/or incurring serious or irreversible
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 6 of 14
Section 6 - ACCIDENTAL RELEASE MEASURES
health effects.
3 INITIAL ISOLATION ZONE is determined as an area, including upwind of the
incident, within which a high probability of localised wind reversal may
expose nearly all persons without appropriate protection to life-threatening
concentrations of the material.
4 SMALL SPILLS involve a leaking package of 200 litres (55 US gallons) or less,
such as a drum (jerrican or box with inner containers). Larger packages leaking
less than 200 litres and compressed gas leaking from a small cylinder are also
considered "small spills".
LARGE SPILLS involve many small leaking packages or a leaking package of
greater than 200 litres, such as a cargo tank, portable tank or a "one-tonne"
compressed gas cylinder.
5 Guide 154 is taken from the US DOT emergency response guide book.
6 IERG information is derived from CANUTEC - Transport Canada.
EMERGENCY RESPONSE PLANNING GUIDELINES (ERPG)
The maximum airborne concentration below which it is believed that nearly all
individuals could be exposed for up to one hour WITHOUT experiencing or developing
life-threatening health effects is:
oxalic acid 500 mg/m鲁
irreversible or other serious effects or symptoms which could
impair an individual's ability to take protective action is:
oxalic acid 5 mg/m鲁
other than mild, transient adverse effects
without perceiving a clearly defined odour is:
oxalic acid 2 mg/m鲁
The threshold concentration below which most people.
will experience no appreciable risk of health effects:
oxalic acid 1 mg/m鲁
American Industrial Hygiene Association (AIHA)
Ingredients considered according to the following cutoffs
Very Toxic (T+) >= 0.1% Toxic (T) >= 3.0%
R50 >= 0.25% Corrosive (C) >= 5.0%
R51 >= 2.5%
else >= 10%
where percentage is percentage of ingredient found in the mixture
SAFE STORAGE WITH OTHER CLASSIFIED CHEMICALS
___________________________________________
+ + + + + +
___________________________________________
+: May be stored together
O: May be stored together with specific preventions
X: Must not be stored together
Personal Protective Equipment advice is contained in Section 8 of the MSDS.
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 7 of 14
Section 7 - HANDLING AND STORAGE
PROCEDURE FOR HANDLING
鈥? Avoid all personal contact, including inhalation.
鈥? Wear protective clothing when risk of exposure occurs.
鈥? Use in a well-ventilated area.
鈥? Avoid contact with moisture.
鈥? Avoid contact with incompatible materials.
鈥? When handling, DO NOT eat, drink or smoke.
鈥? Keep containers securely sealed when not in use.
鈥? Avoid physical damage to containers.
鈥? Always wash hands with soap and water after handling.
鈥? Work clothes should be laundered separately. Launder contaminated clothing
before re-use.
鈥? Use good occupational work practice.
鈥? Observe manufacturer's storing and handling recommendations.
鈥? Atmosphere should be regularly checked against established exposure standards
to ensure safe working conditions are maintained.
SUITABLE CONTAINER
鈥? Lined metal can, Lined metal pail/ can
鈥? Plastic pail
鈥? Polyliner drum
鈥? Packing as recommended by manufacturer.
鈥? Check all containers are clearly labelled and free from leaks.
For low viscosity materials
鈥? Drums and jerricans must be of the non-removable head type.
鈥? Where a can is to be used as an inner package, the can must have a screwed
enclosure.
For materials with a viscosity of at least 2680 cSt. (23 deg. C) and solids
(between 15 C deg. and 40 deg C.):
鈥? Removable head packaging;
鈥? Cans with friction closures and
鈥? low pressure tubes and cartridges
may be used.
-
Where combination packages are used, and the inner packages are of glass,
porcelain or stoneware, there must be sufficient inert cushioning material in
contact with inner and outer packages unless the outer packaging is a close
fitting moulded plastic box and the substances are not incompatible with the
plastic.
STORAGE INCOMPATIBILITY
Dangerous goods of other classes.
Avoid storage with oxidising agents, strong alkalis and silver compounds.
STORAGE REQUIREMENTS
鈥? Store in original containers.
鈥? Keep containers securely sealed.
鈥? Store in a cool, dry, well-ventilated area.
鈥? Store away from incompatible materials and foodstuff containers.
鈥? Protect containers against physical damage and check regularly for leaks.
鈥? Observe manufacturer's storing and handling recommendations.
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
EXPOSURE CONTROLS
Source Material TWA TWA STEL STEL Peak Peak
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 8 of 14
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
Source Material TWA TWA STEL STEL Peak Peak
ppm mg/m鲁 ppm m5/m鲁 ppm mg/m鲁
_________________________ ________________ _____ _____ _____ _____ _____ _____
ppm mg/m鲁 ppm m5/m鲁 ppm mg/m鲁
_________________________ ________________ _____ _____ _____ _____ _____ _____
Australia Exposure oxalic acid 1 2
Standards
EMERGENCY EXPOSURE LIMITS
Material Original IDLH Original IDLH Revised IDLH Value Revised IDLH Value
Value (ppm) Value (mg/m3) (mg/m3) (ppm)
oxalic acid 500 500 [Unch]
There is only scant data regarding the toxicology of industrial exposure
to airborne oxalates. There is no data regarding potential systemic
toxicity or bioavailablity of inhaled oxalates. The TLV-TWA (corresponding
to 0.27 ppm on a molecular basis) is comparable to that of sulfuric acid
and phosphoric acid and is thought to provide protection against the risk
of eye and skin burns and respiratory tract irritation.
The recommendation for a STEL is added to prevent irritation of skin and
mucous membranes.
PERSONAL PROTECTION
EYE
鈥? Safety glasses with side shields.
鈥? Chemical goggles.
鈥? Full face shield may be required for supplementary but never for primary
protection of eyes
鈥? Contact lenses may pose a special hazard; soft contact lenses may absorb and
concentrate irritants. A written policy document, describing the wearing of lens
or restrictions on use, should be created for each workplace or task. This
should include a review of lens absorption and adsorption for the class of
chemicals in use and an account of injury experience. Medical and first-aid
personnel should be trained in their removal and suitable equipment should be
readily available. In the event of chemical exposure, begin eye irrigation
immediately and remove contact lens as soon as practicable. Lens should be
removed at the first signs of eye redness or irritation - lens should be removed
in a clean environment only after workers have washed hands thoroughly. [CDC
NIOSH Current Intelligence Bulletin 59].
HANDS/FEET
Wear chemical protective gloves, eg. PVC.
Wear safety footwear or safety gumboots, eg. Rubber.
OTHER
鈥? Overalls.
鈥? PVC Apron.
鈥? PVC protective suit may be required if exposure severe.
鈥? Eyewash unit.
鈥? Ensure there is ready access to a safety shower.
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 9 of 14
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
GLOVE SELECTION INDEX
Glove selection is based on a modified presentation of the:
"Forsberg Clothing Performance Index".
The effect(s) of the following substance(s) are taken into account in the
computer-generated selection: oxalic acid
Protective Material CPI *.
________________________________
BUTYL A
NATURAL RUBBER A
NATURAL+NEOPRENE A
NEOPRENE A
NEOPRENE/NATURAL A
NITRILE A
NITRILE+PVC A
PVC A
VITON A
________________________________
* CPI - Chemwatch Performance Index
A: Best Selection
B: Satisfactory; may degrade after 4 hours continuous immersion
C: Poor to Dangerous Choice for other than short term immersion
NOTE: As a series of factors will influence the actual performance of the glove,
a final selection must be based on detailed observation. -
* Where the glove is to be used on a short term, casual or infrequent basis,
factors such as "feel" or convenience (e.g. disposability), may dictate a choice
of gloves which might otherwise be unsuitable following long-term or frequent
use. A qualified practitioner should be consulted.
The local concentration of material, quantity and
conditions of use determine the type of personal
protective equipment required.
For further information consult site specific
CHEMWATCH data (if available), or your
Occupational Health and Safety Advisor.
ENGINEERING CONTROLS
Use in a well-ventilated area.
鈥? Local exhaust ventilation is required where solids are handled as powders or
crystals; even when particulates are relatively large, a certain proportion will
be powdered by mutual friction.
鈥? Exhaust ventilation should be designed to prevent accumulation and
recirculation of particulates in the workplace.
鈥? If in spite of local exhaust an adverse concentration of the substance in air
could occur, respiratory protection should be considered. Such protection might
consist of:
(a): particle dust respirators, if necessary, combined with an absorption
cartridge;
(b): filter respirators with absorption cartridge or canister of the right type;
(c): fresh-air hoods or masks
鈥? Build-up of electrostatic charge on the dust particle, may be prevented by
bonding and grounding.
鈥? Powder handling equipment such as dust collectors, dryers and mills may
require additional protection measures such as explosion venting.
Air contaminants generated in the workplace possess varying "escape" velocities
which, in turn, determine the "capture velocities" of fresh circulating air
required to efficiently remove the contaminant.
Type of Contaminant: Air Speed:
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 10 of 14
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
direct "spray " spray painting in 1-2.5 m/s (200-500 f/min.)
shallow "booths " drum "filling "
conveyer "loading " crusher "dusts "
gas discharge (active generation into
zone of rapid air motion)
grinding " abrasive "blasting " 2.5-10 m/s (500-2000 f/min.)
"tumbling " high speed wheel generated
dusts (released at high initial
velocity into zone of very high rapid
air motion).
Within each range the appropriate value depends on:
Lower end of the range Upper end of the range
1: Room air currents minimal or 1: Disturbing room air currents
favourable to capture
2: Contaminants of low toxicity or of 2: Contaminants of high toxicity
nuisance value only
3: Intermittent, low production. 3: High production, heavy use
4: Large hood or large air mass in 4: Small hood-local control only
motion
Simple theory shows that air velocity falls rapidly with distance away from the
opening of a simple extraction pipe. Velocity generally decreases with the
square of distance from the extraction point (in simple cases). Therefore the
air speed at the extraction point should be adjusted, accordingly, after
reference to distance from the contaminating source. The air velocity at the
extraction fan, for example, should be a minimum of 4-10 m/s (800-2000 f/min)
for extraction of crusher dusts generated 2 metres distant from the extraction
point. Other mechanical considerations, producing performance deficits within
the extraction apparatus, make it essential that theoretical air velocities are
multiplied by factors of 10 or more when extraction systems are installed or
used.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
APPEARANCE
White, colourless, crystalline, hygroscopic (when anhydrous) solid.
Very soluble in water and ethanol; slightly soluble in ether and insoluble
in chloroform and benzene. Occurs naturally in many plants (rhubarb leaves,
spinach) and can be made by alkali extraction of sawdust. It is a reducing
agent and is a slightly stronger acid than phosphoric acid.
PHYSICAL PROPERTIES
Mixes with water.
Corrosive.
Molecular Weight: 90.04 (anhy) Boiling Range (掳C): 157 sublimes
Melting Range (掳C): 189.5(anhy) Specific Gravity (water=1): 1.9(anhy)
Solubility in water (g/L): Miscible pH (as supplied): Not applicable
pH (1% solution): 1.3 (0.5% soln) Vapour Pressure (kPa): 72.0 @ 105C
Volatile Component (%vol): Nil @ 38 C. Evaporation Rate: Not available
Relative Vapour Density (air=1): 4.4 Flash Point (掳C): Non flammable.
Lower Explosive Limit (%): Not applicable Upper Explosive Limit (%): Not applicable
Autoignition Temp (掳C): Not available. Decomposition Temp (掳C): > 157
State: DIVIDED SOLID Viscosity: Not available
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
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Section 10 - CHEMICAL STABILITY AND REACTIVITY INFORMATION
CONDITIONS CONTRIBUTING TO INSTABILITY
鈥? Presence of incompatible materials.
鈥? Product is considered stable.
鈥? Hazardous polymerisation will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
POTENTIAL HEALTH EFFECTS
ACUTE HEALTH EFFECTS
SWALLOWED
Accidental ingestion of the material may be harmful; animal experiments indicate
that ingestion of less than 150 gram may be fatal or may produce serious damage
to the health of the individual.
The material can produce chemical burns within the oral cavity and
gastrointestinal tract following ingestion.
EYE
The material can produce chemical burns to the eye following direct contact.
Vapours or mists may be extremely irritating.
SKIN
Skin contact with the material may be harmful; systemic effects may result
following absorption.
The material can produce chemical burns following direct contact
with the skin.
Solution of material in moisture on the skin, or perspiration, may increase
irritant effects.
Entry into the blood-stream, through, for example, cuts, abrasions or lesions,
may produce systemic injury with harmful effects. Examine the skin prior to the
use of the material and ensure that any external damage is suitably protected.
INHALED
The material can cause respiratory irritation in some persons. The body's
response to such irritation can cause further lung damage.
Corrosive acids can cause irritation of the respiratory tract, with coughing,
choking and mucous membrane damage. There may be dizziness, headache, nausea and
weakness. Swelling of the lungs can occur, either immediately or after a delay;
symptoms of this include chest tightness, shortness of breath, frothy phlegm and
cyanosis. Lack of oxygen can cause death hours after onset.
Persons with impaired respiratory function, airway diseases and conditions such
as emphysema or chronic bronchitis, may incur further disability if excessive
concentrations of particulate are inhaled.
The material is not thought to produce adverse health effects following
inhalation (as classified by EC Directives using animal models). Nevertheless,
adverse systemic effects have been produced following exposure of animals by at
least one other route and good hygiene practice requires that exposure be kept
to a minimum and that suitable control measures be used in an occupational
setting.
CHRONIC HEALTH EFFECTS
Repeated or prolonged exposure to acids may result in the erosion of teeth,
swelling and/or ulceration of mouth lining. Irritation of airways to lung, with
cough, and inflammation of lung tissue often occurs. Chronic exposure may
inflame the skin or conjunctiva. Long term exposure to high dust concentrations
OXALIC ACID
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Section 11 - TOXICOLOGICAL INFORMATION
may cause changes in lung function i.e. pneumoconiosis; caused by particles less
than 0.5 micron penetrating and remaining in the lung. Prime symptom is
breathlessness; lung shadows show on X-ray. Asthma-like symptoms may continue
for months or even years after exposure to the material ceases. This may be due
to a non-allergenic condition known as reactive airways dysfunction syndrome
(RADS) which can occur following exposure to high levels of highly irritating
compound. Key criteria for the diagnosis of RADS include the absence of
preceding respiratory disease, in a non-atopic individual, with abrupt onset of
persistent asthma-like symptoms within minutes to hours of a documented exposure
to the irritant. A reversible airflow pattern, on spirometry, with the presence
of moderate to severe bronchial hyperreactivity on methacholine challenge
testing and the lack of minimal lymphocytic inflammation, without eosinophilia,
have also been included in the criteria for diagnosis of RADS. RADS (or asthma)
following an irritating inhalation is an infrequent disorder with rates related
to the concentration of and duration of exposure to the irritating substance.
Industrial bronchitis, on the other hand, is a disorder that occurs as result of
exposure due to high concentrations of irritating substance (often particulate
in nature) and is completely reversible after exposure ceases. The disorder is
characterised by dyspnea, cough and mucous production.
TOXICITY AND IRRITATION
Not available. Refer to individual constituents.
unless otherwise specified data extracted from RTECS - Register of Toxic Effects
of Chemical Substances
Section 12 - ECOLOGICAL INFORMATION
Marine Pollutant:Not Determined
"Daphnia magna EC50 (48hr.) (mg/l):" 25
"Algae IC50 (72hr.) (mg/l):" 80-790
"log Pow (Verschueren 1983):" 1.88372093
BOD5: 0.1
BOD20: 0.115
COD: 0.18
ThOD: 0.18
Prevent, by any means available, spillage from entering drains or water
courses.
DO NOT discharge into sewer or waterways.
log Kow: -0.81- -0.43
BOD 5 if unstated: 0.086-0.14
COD: 0.126-0.18
ThOD: 0.18
Toxicity Fish: TLm(24)4000mg/L
Section 13 - DISPOSAL CONSIDERATIONS
If container can not be cleaned sufficiently well to ensure none of the original
product remains or if the container cannot be used to store the same product,
then puncture containers, to prevent re-use, and bury at an authorised landfill.
Recycle wherever possible.
鈥? Consult manufacturer for recycling options or consult local or regional waste
management authority for disposal if no suitable treatment or disposal facility
can be identified.
鈥? Treat and neutralise at an approved treatment plant. Treatment should involve:
Mixing or slurrying in water; Neutralisation with soda-lime or soda-ash followed
by: Burial in a licenced land-fill or Incineration in a licenced apparatus
(after admixture with suitable combustible material)
鈥? Decontaminate empty containers with 5% aqueous sodium hydroxide or soda ash,
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 13 of 14
Section 13 - DISPOSAL CONSIDERATIONS
followed by water. Observe all label safeguards until containers are cleaned and
destroyed.
Section 14 - TRANSPORTATION INFORMATION
Labels Required
corrosive
HAZCHEM
2X
Land Transport UNDG:
Dangerous Goods Class: 8 Subrisk: None
UN Number: 3261 Packing Group: III
Shipping Name:CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.
Edit
Air Transport IATA:
ICAO/IATA Class: 8 ICAO/IATA Subrisk: None
UN/ID Number: 3261 Packing Group: III
ERG Code: 8L
Shipping Name: Corrosive solid, acidic, organic, n.o.s. *
Maritime Transport IMDG:
IMDG Class: 8 IMDG Subrisk: None
UN Number: 3261 Packing Group: III
EMS Number: None Marine Pollutant: Not
Determined
Shipping Name: CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.
Section 15 - REGULATORY INFORMATION
POISONS SCHEDULE
S6
REGULATIONS
oxalic acid (CAS: 144-62-7) is found on the following regulatory lists;
Australia Inventory of Chemical Substances (AICS)
Australia Poisons Schedule
International Council of Chemical Associations (ICCA) - High Production Volume
List
OECD Representative List of High Production Volume (HPV) Chemicals
OXALIC ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 22-Jan-2006 CHEMWATCH 2449-2
A317TC CD 2006/2 Page 14 of 14
Section 16 - OTHER INFORMATION
This document is copyright. Apart from any fair dealing for the purposes of
private study, research, review or criticism, as permitted under the Copyright
Act, no part may be reproduced by any process without written permission from
CHEMWATCH. TEL (+61 3) 9572 4700.
Issue Date: 22-Jan-2006
Print Date: 29-Jun-2006
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