International Chemical Safety Cards

OXALIC ACID ICSC: 0529
World Health Organization (WHO) International Labour Organization (ILO) United Nations Environmental Programme (UNEP) European Commission National Institute for Occupational Safety and Health (NIOSH)
Ethanedioic acid
C2H2O4 / (COOH)2
Molecular mass: 90.0
8 Corrosive placard ICSC #    0529
CAS #     144-62-7
RTECS # RO2450000
UN #        3261
EC #         607-006-00-8
November 24, 2009 Validated
Pu, hed in Series 7.
TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Water spray, powder , foam, carbon dioxide.
EXPLOSION

In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
PREVENT DISPERSION OF DUST!

 •INHALATION Cough. Sore throat. Burning sensation. Shortness of breath. Laboured breathing. Headache.
Ventilation (not if powder), local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Refer immediately for medical attention.
 •SKIN Redness. Pain. Skin burns.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower for at least 15 minutes. Refer for medical attention.
 •EYES Redness. Pain. Blurred vision. Burns .
Face shield or eye protection in combination with breathing protection.
Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.
 •INGESTION Sore throat. Burning sensation. Abdominal pain. Laboured breathing. Convulsions. Paralysis. Cardiac dysrhythmia Shock or collapse.
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Do NOT induce vomiting. Refer immediately for medical attention.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance, protective gloves, safety goggles. Sweep spilled substance into plastic containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water.
Separated from strong oxidants, food and feedstuffs . Dry. Well closed.
Do not transport with food and feedstuffs.
Xn symbol
R: 21/22
S: 2-24/25
UN Hazard Class: 8
UN Packing Group: III
Signal: Danger
Corr-Excl mark
Harmful if swallowed
Causes severe skin burns and eye damage
May cause respiratory irritation
SEE IMPORTANT INFORMATION ON BACK
ICSC: 0529 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

OXALIC ACID ICSC: 0529
I

M

P

O

R

T

A

N

T


D

A

T

A
PHYSICAL STATE; APPEARANCE:
HYGROSCOPIC, COLOURLESS CRYSTALS OR WHITE POWDER.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
On contact with hot surfaces or flames this substance decomposes forming formic acid and carbon monoxide. The solution in water is a medium strong acid. Reacts violently with strong oxidants causing fire and explosion hazard. Reacts with some silver compounds to form explosive silver oxalate. Attacks some forms of plastic.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 1 mg/m as TWA; 2 mg/m as STEL (ACGIH 2009).
EU OEL: 1 mg/m as TWA (EU 2006).
OSHA PEL: TWA 1 mg/m3
NIOSH REL: TWA 1 mg/m3 ST 2 mg/m3
NIOSH IDLH: 500 mg/m3 See: 144627


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. Serious local effects by all routes of exposure. rabbit 20 000 mg/kg; LD50 oral rat 375 mg/kg MERCK MSDS; Bayer MSDS, NIOSH Pocket Guide, HSDB h council

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes , the skin and the respiratory tract . Corrosive on ingestion. The substance may cause effects on the calcium balance after ingestion. Exposure at high levels may result in death.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. Exposure may result in kidney stones, slow-healing ulcers and black finger nails. 0
PHYSICAL
PROPERTIES
Melting point: 189.5C

Decomposes
(See Notes)
Density: 1.9
g/cm
Solubility in water, g/100 ml at 20C: 9-10
(moderate)
Octanol/water partition coefficient as log Pow: -0.81
ENVIRONMENTAL
DATA

N O T E S
Oxalic acid may sublime at temperatures >100 C at reduced pressure. Optimal sublimation temperature is 157 C. At higher temperatures it partly decomposes. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Some producers do not classify this substance under UN 3261.
NFPA Code: H3; F1; R0;
ADDITIONAL INFORMATION


ICSC: 0529 OXALIC ACID
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.