CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 1 of 13
Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
PRODUCT NAME
CAUSTIC SODA PRILL
SYNONYMS
NaOH, "soda lye", "white caustic soda", "caustic soda, anhydrous", lye, "sodium
hydroxide solid", pellets, pearl, flakes, alkali, "caustic soda - pearl", "solid grades",
30167, "PPG Pels Caustic Soda Beads", "Spectrum S1303", S1302, S1303, S1305, S1308, SO170
PROPER SHIPPING NAME
SODIUM HYDROXIDE, SOLID
PRODUCT USE
Component of alkali cleaners. Manufacture of soap, pulp and paper; rayon. Chemical
manufacture. Neutralising agent in petroleum refining; manufacture of aluminium,
detergents, textile processing, refining of vegetable oils. Laboratory reagent, for
organic fusion, etching of metal. Used for regenerating ion exchange resins, lye peeling
of fruits and vegetables in the food industry.
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
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 2 of 13
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 NZS3
RISK SAFETY
Causes severe burns. Keep locked up.
Risk of serious damage to eyes. Do not breathe dust.
Ingestion may produce health damage*. Avoid contact with eyes.
Cumulative effects may result following Wear suitable protective clothing.
exposure*.
* (limited evidence). To clean the floor and all objects contaminated
by this material use water.
Take off immediately all contaminated clothing.
In case of accident or if you feel unwell
IMMEDIATELY contact Doctor or Poisons
Information Centre (show label if possible).
This material and its container must be disposed
of as hazardous waste.
Section 3 - COMPOSITION / INFORMATION ON INGREDIENTS
NAME CAS RN %
sodium hydroxide 1310-73-2 >98
Section 4 - FIRST AID MEASURES
SWALLOWED
路 For advice, contact a Poisons Information Centre or a doctor at once.
路 Urgent hospital treatment is likely to be needed.
路 If swallowed do NOT induce vomiting.
路 If vomiting occurs, lean patient forward or place on left side (head-down position, if
possible) to maintain open airway and prevent aspiration.
路 Observe the patient carefully.
路 Never give liquid to a person showing signs of being sleepy or with reduced awareness;
i.e. becoming unconscious.
路 Give water to rinse out mouth, then provide liquid slowly and as much as casualty can
comfortably drink.
路 Transport to hospital or doctor without delay.
EYE
If this product comes in contact with the eyes:
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 3 of 13
Section 4 - FIRST AID MEASURES
路 Immediately hold eyelids apart and flush the eye continuously with running water.
路 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.
路 Continue flushing until advised to stop by the Poisons Information Centre or a doctor,
or for at least 15 minutes.
路 Transport to hospital or doctor without delay.
路 Removal of contact lenses after an eye injury should only be undertaken by skilled
personnel.
SKIN
If skin or hair contact occurs:
路 Immediately flush body and clothes with large amounts of water, using safety shower if
available.
路 Quickly remove all contaminated clothing, including footwear.
路 Wash skin and hair with running water. Continue flushing with water until advised to
stop by the Poisons Information Centre.
路 Transport to hospital, or doctor.
INHALED
路 If fumes or combustion products are inhaled remove from contaminated area.
路 Lay patient down. Keep warm and rested.
路 Prostheses such as false teeth, which may block airway, should be removed, where
possible, prior to initiating first aid procedures.
路 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.
路 Transport to hospital, or doctor, without delay.
NOTES TO PHYSICIAN
For acute or short-term repeated exposures to highly alkaline materials:
路 Respiratory stress is uncommon but present occasionally because of soft tissue edema.
路 Unless endotracheal intubation can be accomplished under direct vision,
cricothyroidotomy or tracheotomy may be necessary.
路 Oxygen is given as indicated.
路 The presence of shock suggests perforation and mandates an intravenous line and fluid
administration.
路 Damage due to alkaline corrosives occurs by liquefaction necrosis whereby the
saponification of fats and solubilisation of proteins allow deep penetration into the
tissue.
Alkalis continue to cause damage after exposure.
INGESTION:
路 Milk and water are the preferred diluents
No more than 2 glasses of water should be given to an adult.
路 Neutralising agents should never be given since exothermic heat reaction may compound
injury.
* Catharsis and emesis are absolutely contra-indicated.
* Activated charcoal does not absorb alkali.
* Gastric lavage should not be used.
Supportive care involves the following:
路 Withhold oral feedings initially.
路 If endoscopy confirms transmucosal injury start steroids only within the first 48
hours.
路 Carefully evaluate the amount of tissue necrosis before assessing the need for surgical
intervention.
路 Patients should be instructed to seek medical attention whenever they develop
difficulty in swallowing (dysphagia).
SKIN AND EYE:
路 Injury should be irrigated for 20-30 minutes.
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 4 of 13
Section 4 - FIRST AID MEASURES
Eye injuries require saline. [Ellenhorn & Barceloux: Medical Toxicology].
Section 5 - FIRE FIGHTING MEASURES
EXTINGUISHING MEDIA
路 Water spray or fog.
路 Foam.
路 Dry chemical powder.
路 BCF (where regulations permit).
路 Carbon dioxide.
FIRE FIGHTING
路 Alert Fire Brigade and tell them location and nature of hazard.
路 Wear full body protective clothing with breathing apparatus.
路 Prevent, by any means available, spillage from entering drains or water course.
路 Use fire fighting procedures suitable for surrounding area.
路 Do not approach containers suspected to be hot.
路 Cool fire exposed containers with water spray from a protected location.
路 If safe to do so, remove containers from path of fire.
路 Equipment should be thoroughly decontaminated after use.
FIRE/EXPLOSION HAZARD
路 Non combustible.
路 Not considered a significant fire risk, however containers may burn.
May emit corrosive fumes.
FIRE INCOMPATIBILITY
None known.
HAZCHEM: 2X
Personal Protective Equipment
Gas tight chemical resistant suit.
Section 6 - ACCIDENTAL RELEASE MEASURES
EMERGENCY PROCEDURES
MINOR SPILLS
路 Remove all ignition sources.
路 Clean up all spills immediately.
路 Avoid contact with skin and eyes.
路 Control personal contact by using protective equipment.
路 Use dry clean up procedures and avoid generating dust.
路 Place in a suitable labelled container for waste disposal.
MAJOR SPILLS
路 Clear area of personnel and move upwind.
路 Alert Fire Brigade and tell them location and nature of hazard.
路 Wear full body protective clothing with breathing apparatus.
路 Prevent, by any means available, spillage from entering drains or water course.
路 Consider evacuation (or protect in place).
路 Stop leak if safe to do so.
路 Contain spill with sand, earth or vermiculite.
路 Collect recoverable product into labelled containers for recycling.
路 Neutralise/decontaminate residue.
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 5 of 13
Section 6 - ACCIDENTAL RELEASE MEASURES
路 Collect solid residues and seal in labelled drums for disposal.
路 Wash area and prevent runoff into drains.
路 After clean up operations, decontaminate and launder all protective clothing and
equipment before storing and re-using.
路 If contamination of drains or waterways occurs, advise emergency services.
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:
sodium hydroxide 50 mg/m鲁
irreversible or other serious effects or symptoms which could impair an individual's ability to take
protective action is:
sodium hydroxide 5 mg/m鲁
other than mild, transient adverse effects without perceiving a clearly defined odour is:
sodium hydroxide 0.5 mg/m鲁
The threshold concentration below which most people will experience no appreciable risk of health effects:
sodium hydroxide 0.5 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
Personal Protective Equipment advice is contained in Section 8 of the MSDS.
Section 7 - HANDLING AND STORAGE
PROCEDURE FOR HANDLING
DO NOT use aluminium, galvanised or tin-plated containers.
路 Avoid all personal contact, including inhalation.
路 Wear protective clothing when risk of exposure occurs.
路 Use in a well-ventilated area.
路 WARNING: To avoid violent reaction, ALWAYS add material to water and NEVER water to
material.
路 Avoid smoking, naked lights or ignition sources.
路 Avoid contact with incompatible materials.
路 When handling, DO NOT eat, drink or smoke.
路 Keep containers securely sealed when not in use.
路 Avoid physical damage to containers.
路 Always wash hands with soap and water after handling.
路 Work clothes should be laundered separately. Launder contaminated clothing before re
-use.
路 Use good occupational work practice.
路 Observe manufacturer's storing and handling recommendations.
路 Atmosphere should be regularly checked against established exposure standards to
ensure safe working conditions are maintained.
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 6 of 13
Section 7 - HANDLING AND STORAGE
SUITABLE CONTAINER
Glass container.
路 Lined metal can, lined metal pail/ can.
路 Plastic pail.
路 Polyliner drum.
路 Packing as recommended by manufacturer.
路 Check all containers are clearly labelled and free from leaks.
STORAGE INCOMPATIBILITY
In presence of moisture, the material is corrosive to aluminium, zinc and tin producing
highly flammable hydrogen gas.
Avoid strong acids.
Avoid contact with copper, aluminium and their alloys.
Store away from nitro compounds and trichlorethylene.
Reacts with mineral acids to form corresponding salts; reacts with weak acids,
gases such as hydrogen sulfide, sulfur dioxide and carbon dioxide; ignites when
in contact with cinnamaldehyde or zinc and reacts explosively with a mixture of
chloroform and methane.
Corrosive to metals such as aluminium, tin and zinc as well as to alloys such as
steel - may form explosive hydrogen gas.
STORAGE REQUIREMENTS
Plastic bag
NOTE: Bags should be stacked, blocked, interlocked, and limited in height so that they
are stable and secure against sliding or collapse.
路 Store in original containers.
路 Keep containers securely sealed.
路 Store in a cool, dry, well-ventilated area.
路 Store away from incompatible materials and foodstuff containers.
路 Protect containers against physical damage and check regularly for leaks.
路 Observe manufacturer's storing and handling recommendations.
DO NOT store near acids, or oxidising agents.
No smoking, naked lights, heat or ignition sources.
_____________________________________________________
SAFE STORAGE WITH OTHER CLASSIFIED CHEMICALS
+ + + + + +
_____________________________________________________
+: May be stored together
O: May be stored together with specific preventions
X: Must not be stored together
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
EXPOSURE CONTROLS
Source Material Peak mg/m鲁
_________ _________ _____
Australia Exposure Standards sodium hydroxide (Sodium 2
hydroxide)
EMERGENCY EXPOSURE LIMITS
Material Revised IDLH Value (mg/m3) Revised IDLH Value (ppm)
sodium hydroxide 10
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 7 of 13
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
MATERIAL DATA
The TLV-C is recommended based on concentrations that produce noticeable
but not excessive, ocular and upper respiratory tract irritation.
PERSONAL PROTECTION
EYE
路 Chemical goggles.
路 Full face shield may be required for supplementary but never for primary protection of
eyes
路 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
Suitability and durability of glove type is dependent on usage. Factors such as:
路 frequency and duration of contact,
路 chemical resistance of glove material,
路 glove thickness and
路 dexterity,
are important in the selection of gloves.
Elbow length PVC gloves.
OTHER
路 Overalls.
路 PVC Apron.
路 PVC protective suit may be required if exposure severe.
路 Eyewash unit.
路 Ensure there is ready access to a safety shower.
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: sodium hydroxide
Protective Material CPI *.
__________________________________________
BUTYL A
NAT+NEOPR+NITRILE A
NATURAL+NEOPRENE A
NEOPRENE A
NEOPRENE/NATURAL A
NITRILE+PVC A
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 8 of 13
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
PE A
PE/EVAL/PE A
PVC A
SARANEX- 23 A
SARANEX- 23 2- PLY A
TEFLON A
VITON/CHLOROBUTYL A
NATURAL RUBBER A
NITRILE 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.
RESPIRATOR
Protection Factor Half- Face Respirator Full- Face Respirator Powered Air Respirator
10 x ES P1 Air- line* -- PAPR- P1 -
50 x ES Air- line** P2 PAPR- P2
100 x ES - P3 -
Air- line* -
100+ x ES - Air- line** PAPR- P3
* - Negative pressure demand ** - Continuous flow.
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
Local exhaust ventilation usually required. If risk of overexposure exists, wear approved
respirator. Correct fit is essential to obtain adequate protection. Supplied-air type
respirator may be required in special circumstances. Correct fit is essential to ensure
adequate protection.
An approved self contained breathing apparatus (SCBA) may be required in some situations.
Provide adequate ventilation in warehouse or closed storage area. Air contaminants
generated in the workplace possess varying "escape" velocities which, in turn, determine
the "capture velocities" of fresh circulating air required to effectively remove the
contaminant.
Type of Contaminant: Air Speed:
solvent, vapours, degreasing etc., evaporating 0.25- 0.5 m/s (50- 100 f/min.)
from tank (in still air).
aerosols, fumes from pouring operations, 0.5- 1 m/s (100- 200 f/min.)
intermittent container filling, low speed
conveyer transfers, welding, spray drift,
plating acid fumes, pickling (released at low
velocity into zone of active generation)
direct spray, spray painting in shallow booths, 1- 2.5 m/s (200- 500 f/min.)
drum filling, conveyer loading, crusher dusts,
gas discharge (active generation into zone of
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 9 of 13
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
rapid air motion)
grinding, abrasive blasting, tumbling, high 2.5- 10 m/s (500- 2000 f/min.)
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 favourable to 1: Disturbing room air currents
capture
2: Contaminants of low toxicity or of nuisance 2: Contaminants of high toxicity
value only.
3: Intermittent, low production. 3: High production, heavy use
4: Large hood or large air mass in motion 4: Small hood- local control only
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 1-2
m/s (200-400 f/min) for extraction of solvents generated in a tank 2 meters 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 hygroscopic, odourless, pellets, flakes, sticks or solid cast mass. Vigorously
exotherms when mixed with water. Explosive boiling and spitting will occur if added to hot
water. Reacts violently with acids. CAUSTIC alkali. Soluble in water, alcohol, ether,
glycerol. In the presence of moisture, highly corrosive to aluminium, zinc and tin. HIGHLY
reactive: with ammonium salts evolves ammonia gas. Rapidly picks up moisture from the air
and with carbon dioxide in air forms sodium carbonate.
PHYSICAL PROPERTIES
Solid.
Mixes with water.
Corrosive.
Alkaline.
Molecular Weight: 40 Boiling Range (掳C): 1390
Melting Range (掳C): 318.4 Specific Gravity (water=1): 2.12 @ 20 C
Solubility in water (g/L): Miscible pH (as supplied): Not applicable
pH (1% solution): 12.7 Vapour Pressure (kPa): Negligible
Volatile Component (%vol): Not available Evaporation Rate: Not available
Relative Vapour Density (air=1): Not available Flash Point (掳C): Not applicable
Lower Explosive Limit (%): Not applicable Upper Explosive Limit (%): Not applicable
Autoignition Temp (掳C): Not applicable Decomposition Temp (掳C): Not Applicable
State: Divided solid Viscosity: Not Applicable
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 10 of 13
Section 10 - CHEMICAL STABILITY AND REACTIVITY INFORMATION
CONDITIONS CONTRIBUTING TO INSTABILITY
路 Presence of incompatible materials.
路 Product is considered stable.
路 Hazardous polymerisation will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
POTENTIAL HEALTH EFFECTS
ACUTE HEALTH EFFECTS
SWALLOWED
Accidental ingestion of the material may be damaging to the health of the individual.
Ingestion of alkaline corrosives may produce burns around the mouth, ulcerations and
swellings of the mucous membranes, profuse saliva production, with an inability to speak
or swallow. Both the oesophagus and stomach may experience burning pain; vomiting and
diarrhoea may follow. Epiglottal swelling may result in respiratory distress and asphyxia
; shock can occur. Narrowing of the oesophagus, stomach or stomach valve may occur
immediately or after a long delay (weeks to years). Severe exposure can perforate the
oesophagus or stomach leading to infections of the chest or abdominal cavity, with low
chest pain, abdominal stiffness and fever. All of the above can cause death.
EYE
If applied to the eyes, this material causes severe eye damage.
Direct eye contact with corrosive bases can cause pain and burns. There may be swelling,
epithelium destruction, clouding of the cornea and inflammation of the iris. Mild cases
often resolve; severe cases can be prolonged with complications such as persistent
swelling, scarring, permanent cloudiness, bulging of the eye, cataracts, eyelids glued to
the eyeball and blindness.
SKIN
The material can produce severe chemical burns following direct contact
with the skin.
Skin contact with alkaline corrosives may produce severe pain and burns; brownish stains
may develop. The corroded area may be soft, gelatinous and necrotic; tissue destruction
may be deep.
Skin contact is not thought to have harmful health effects (as classified under EC
Directives); the material may still produce health damage following entry through wounds,
lesions or abrasions.
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.
Inhaling corrosive bases may irritate the respiratory tract. Symptoms include cough,
choking, pain and damage to the mucous membrane. In severe cases, lung swelling may
develop, sometimes after a delay of hours to days. There may be low blood pressure, a
weak and rapid pulse, and crackling sounds.
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
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 11 of 13
Section 11 - TOXICOLOGICAL INFORMATION
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 corrosives may result in the erosion of teeth,
inflammatory and ulcerative changes in the mouth and necrosis (rarely) of the jaw.
Bronchial irritation, with cough, and frequent attacks of bronchial pneumonia may ensue.
Gastrointestinal disturbances may also occur. Chronic exposures may result in dermatitis
and/or conjunctivitis.
Substance accumulation, in the human body, may occur and may cause some concern following
repeated or long-term occupational exposure.
Long term exposure to high dust concentrations 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.
TOXICITY AND IRRITATION
unless otherwise specified data extracted from RTECS - Register of Toxic Effects of Chemical Substances.
TOXICITY IRRITATION
Skin (rabbit): 500 mg/24h SEVERE
Eye (rabbit): 0.05 mg/24h SEVERE
Eye (rabbit):1 mg/24h SEVERE
Eye (rabbit):1 mg/30s rinsed- SEVERE
The material may produce severe irritation to the eye causing pronounced inflammation.
Repeated or prolonged exposure to irritants may produce conjunctivitis.
The material may cause severe skin irritation after prolonged or repeated exposure and
may produce on contact skin redness, swelling, the production of vesicles, scaling and
thickening of the skin. Repeated exposures may produce severe ulceration.
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 mucus production.
Section 12 - ECOLOGICAL INFORMATION
Prevent, by any means available, spillage from entering drains or water
courses.
DO NOT discharge into sewer or waterways.
Ecotoxicity:
Fish LC50 (96h): 43mg/l
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 12 of 13
Section 13 - DISPOSAL CONSIDERATIONS
路 Recycle wherever possible.
路 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.
路 Treat and neutralise at an approved treatment plant. Treatment should involve: Mixing
or slurrying in water; Neutralisation followed by: Burial in a licenced land-fill or
Incineration in a licenced apparatus (after admixture with suitable combustible material)
路 Decontaminate empty containers. Observe all label safeguards until containers are
cleaned and destroyed.
Section 14 - TRANSPORTATION INFORMATION
Labels Required: CORROSIVE
HAZCHEM: 2X
UNDG:
Dangerous Goods Class: 8 Subrisk: None
UN Number: 1823 Packing Group: II
Shipping Name:SODIUM HYDROXIDE, SOLID
Air Transport IATA:
ICAO/IATA Class: 8 ICAO/IATA Subrisk: None
UN/ID Number: 1823 Packing Group: II
Special provisions: None
Shipping Name: SODIUM HYDROXIDE, SOLID
Maritime Transport IMDG:
IMDG Class: 8 IMDG Subrisk: None
UN Number: 1823 Packing Group: II
EMS Number: F- A, S- B Special provisions: None
Shipping Name: SODIUM HYDROXIDE, SOLID
Section 15 - REGULATORY INFORMATION
POISONS SCHEDULE: S6 NZS3
REGULATIONS
sodium hydroxide (CAS: 1310-73-2) is found on the following regulatory lists;
Australia Exposure Standards
Australia High Volume Industrial Chemical List (HVICL)
Australia Illicit Drug Reagents/Essential Chemicals - Category III
Australia Inventory of Chemical Substances (AICS)
Australia Standard for the Uniform Scheduling of Drugs and Poisons (SUSDP) - Appendix E (Part 2)
Australia Standard for the Uniform Scheduling of Drugs and Poisons (SUSDP) - Appendix F (Part 3)
Australia Standard for the Uniform Scheduling of Drugs and Poisons (SUSDP) - Schedule 5
Australia Standard for the Uniform Scheduling of Drugs and Poisons (SUSDP) - Schedule 6
CODEX General Standard for Food Additives (GSFA) - Additives Permitted for Use in Food in General, Unless Otherwise Specified, in Accordance with GMP
International Council of Chemical Associations (ICCA) - High Production Volume List
CAUSTIC SODA PRILL
(Chemwatch name: SODIUM HYDROXIDE)
Chemwatch Material Safety Data Sheet
For Workplace - Small Volume Use Only. CHEMWATCH 1823
Issue Date: 25-May-2007 Version No:7
NC317TLP CD 2007/3 Page 13 of 13
Section 15 - REGULATORY INFORMATION
OECD Representative List of High Production Volume (HPV) Chemicals
Section 16 - OTHER INFORMATION
Classification of the preparation and its individual components has drawn on official and
authoritative sources as well as independent review by the Chemwatch Classification
committee using available literature references.
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: 25-May-2007
Print Date: 17-Dec-2007
|