**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 144-62-7 |Oxalic acid, anhydrous | - | 205-634-3 |
|----------------|--------------------------------------|----------|-----------|
| 6153-56-6 |Oxalic acid dihydrate | 99.5 | unlisted |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: XN
Risk Phrases: 21/22
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Harmful in contact with skin and if swallowed.
Potential Health Effects
Eye:
May cause severe eye irritation. May result in corneal injury.
Skin:
Causes skin irritation. Harmful if absorbed through the skin. Rare
chemical burns may occur from oxalic acid and may cause hypocalcemia.
Gangrene has occurred in the hands of people working with oxalic acid
solutions without rubber gloves. The skin lesions are characterized
by cracking of the skin and the development of slow-healing ulcers.
The skin may be bluish in color, and the nails brittle and yellow.
Ingestion:
Oxalic acid is toxic because of its acidic and chelating properties.
It is especially toxic when ingested. As little as 5 grams (71 mg/kg)
may be fatal. Ulcerations of the mouth, vomiting of blood, and rapid
appearance of shock, convulsions, twitching, tetany, and
cardiovascular collapse may occur following ingestion of oxalic acid
or its soluble salts. Oxalic acid can bind calcium to form calcium
oxalate which is insoluble at physiological pH. Calcium oxalate thus
formed might precipitate in the kidney tubules and the brain.
Hypocalcemia secondary to calcium oxalate formation might disturb
the function of the heart and nerves.
Inhalation:
Inhalation of oxalic acid produces irritation of the respiratory
tract, ulceration of the mucous membranes, headaches, nervousness,
cough, vomiting, emaciation, back pain (due to kidney injury), and
weakness.
Chronic:
Inhalation of oxalic acid dust or mist over a long period of time
might result in weight loss and respiratory tract inflammation. Rats
administered oxalic acid at 2.5 and 5% in the diet for 70 days
developed depressed thyroid function and weight loss. A study of
railroad car cleaners in Norway who were heavily exposed to oxalic
acid solutions and vapors revealed a 53% prevalence of urolithiasis
(the formation of urinary stones), compared to a rate of 12% among
unexposed workers from the same company.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, immediately flush skin with plenty of water for
at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
If swallowed, do NOT induce vomiting. Get medical aid immediately.
If victim is fully conscious, give a cupful of water. Never give
anything by mouth to an unconscious person.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
Antidote:
Intravenous administration of calcium gluconate or calcium chloride
may be required if hypocalcemia or hypocalcemic tetany occur.
**** SECTION 5 - FIRE FIGHTING MEASURES ****
General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Use water
spray to keep fire-exposed containers cool.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or alcohol-resistant
foam.
**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****
General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal
container. Avoid runoff into storm sewers and ditches which lead to
waterways. Clean up spills immediately, observing precautions in the
Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Minimize dust generation and
accumulation. Do not get in eyes, on skin, or on clothing. Do not
ingest or inhale. Discard contaminated shoes. Use only with adequate
ventilation.
Storage:
Keep container closed when not in use. Store in a cool, dry,
well-ventilated area away from incompatible substances.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate general or
local exhaust ventilation to keep airborne concentrations below the
permissible exposure limits.
Personal Protective Equipment
Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
Follow the OSHA respirator regulations found in 29CFR
1910.134 or European Standard EN 149. Always use a
NIOSH or European Standard EN 149 approved respirator
when necessary.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Powder
Appearance: white
Odor: odorless
pH: Not available.
Vapor Pressure: .92 mm Hg @ 60 deg C
Viscosity: Not available.
Boiling Point: Not applicable.
Freezing/Melting Point: 104 deg C sublimes
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Moderately Soluble.
Specific Gravity/Density: 1.90
Molecular Formula: C2H2O4.2H2O
Molecular Weight: 126.04
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation, metals.
Incompatibilities with Other Materials:
Strong oxidizing agents, hypochlorite, silver, strong alkalies,
chlorites, furfuryl alcohol.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, acrid smoke and fumes, formic acid.
Hazardous Polymerization: Has not been reported.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 144-62-7: RO2450000
CAS# 6153-56-6 unlisted.
LD50/LC50:
CAS# 144-62-7: Draize test, rabbit, eye: 250 ug/24H Severe; Draize
test, rabbit, skin: 500 mg/24H Mild; Oral, rat: LD50 = 7500 mg/kg.
CAS# 6153-56-6.
Carcinogenicity:
Oxalic acid, anhydrous -
Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Oxalic acid dihydrate -
Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Other:
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
Ecotoxicity:
Fish: Bluegill/Sunfish: LC50 = 4000 mg/L; 24 Hr.; Static
ConditionsFish: Mosquito Fish: LC50 = 1350 mg/L; 24 Hr.; Static
Conditions
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Dispose of in a manner consistent with federal, state, and local regulations.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.*
Hazard Class: 8
UN Number: 3261
Packing Group: II
IMO
Shipping Name: CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.
Hazard Class: 8
UN Number: 3261
Packing Group: II
RID/ADR
Shipping Name: CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.
Dangerous Goods Code: 8(39B)
UN Number: 3261
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 21/22 Harmful in contact with skin and if
swallowed.
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 144-62-7: 1
CAS# 6153-56-6: 1
United Kingdom Occupational Exposure Limits
CAS# 144-62-7: OES-United Kingdom, TWA 1 mg/m3 TWA
CAS# 144-62-7: OES-United Kingdom, STEL 2 mg/m3 STEL
CAS# 144-62-7: OES-United Kingdom, STEL 2 mg/m3 STEL
Canada
CAS# 144-62-7 is listed on Canada's DSL List.
CAS# 144-62-7 is listed on Canada's Ingredient Disclosure List.
CAS# 6153-56-6 is not listed on Canada's Ingredient Disclosure List.
Exposure Limits
CAS# 144-62-7: OEL-ARAB Republic of Egypt:TWA 1 mg/m3
OEL-AUSTRALIA:TWA 1 mg/m3;STEL 2 mg/m3
OEL-BELGIUM:TWA 1 mg/m3;STEL 2 mg/m3
OEL-DENMARK:TWA 1 mg/m3
OEL-FINLAND:TWA 1 mg/m3;STEL 3 mg/m3
OEL-FRANCE:TWA 1 mg/m3
OEL-THE NETHERLANDS:TWA 1 mg/m3
OEL-THE PHILIPPINES:TWA 1 mg/m3
OEL-SWITZERLAND:TWA 1 mg/m3
OEL-UNITED KINGDOM:TWA 1 mg/m3;STEL 2 mg/m3
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
US FEDERAL
TSCA
CAS# 144-62-7 is listed on the TSCA inventory.
CAS# 6153-56-6 is not on the TSCA Inventory. It is a hydrate and
exempt from TSCA Inventory requirements (40CFR720.3(u)(2)).
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 8/24/1997 Revision #6 Date: 5/24/2001
The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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