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NIOSH

ACRYLIC ACID

ICSC: 0688

Ethylenecarboxylic acid
Acroleic acid
2-Propenoic acid
C3H4O2 / CH2=CHCOOH
Molecular mass: 72.07
ICSC # 0688 		CAS # 79-10-7
RTECS # AS4375000
UN # 2218 (stabilized)
EC # 607-061-00-8
August 10, 1997 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Flammable. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames, NO sparks, and NO smoking.
Water spray, alcohol-resistant foam, powder, carbon dioxide.
EXPLOSION Above 54°C explosive vapour/air mixtures may be formed.
Above 54°C use a closed system, ventilation, and explosion-proof electrical equipment. Vapours will be uninhibited and may polymerize in exhaust or ventilation facilities with risk of breakdown.
In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position.
EXPOSURE
STRICT HYGIENE! AVOID ALL CONTACT!

•INHALATION Cough. Sore throat. Shortness of breath. Burning sensation. Laboured breathing. Corrosive. Symptoms may be delayed (see Notes).
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Refer for medical attention.
•SKIN MAY BE ABSORBED! Redness. Blisters. Pain.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
•EYES Redness. Pain. Severe deep burns. Loss of vision.
Face shield or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Burning sensation. Weakness. Abdominal cramps. Diarrhoea. Shock. Corrosive. Unconsciousness.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert if large spill! Ventilation. Collect leaking and spilled liquid in sealable labelled containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. Personal protection: complete protective clothing including self-contained breathing apparatus.
Fireproof. Separated from strong oxidants, strong bases, strong acids, food and feedstuffs . Keep in the dark. Keep in a well-ventilated room. Do not allow to solidify. Store only if stabilized (see Notes).
Do not transport with food and feedstuffs. Can be stored only in glass, stainless steel, aluminium or polyethylene-lined container.
Note: D
C symbol
N symbol
R: 10-20/21/22-35-50
S: 1/2-26-36/37/39-45-61
UN Hazard Class: 8
UN Subsidiary Risks: 3
UN Packing Group: II
ICSC: 0688 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.

ACRYLIC ACID

ICSC: 0688

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D

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PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air. Vapour forms explosive mixture with air.

CHEMICAL DANGERS:
The substance polymerizes readily due to heating, under the influence of light, oxygen, oxidizing agents such as peroxides or other activators (acid, iron salts), with fire or explosion hazard. Upon heating, toxic fumes are formed. The substance is a medium strong acid. Reacts violently withstrong bases and amines. Attacks many metals, including nickel and copper.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 2 ppm as TWA; (skin); A4 (not classifiable as a human carcinogen); (ACGIH 2005).
MAK: 10 ppm, 30 mg/m3;
Peak limitation category: I(1); Pregnancy risk group: C;
(DFG 2005).
OSHA PEL†: none
NIOSH REL: TWA 2 ppm (6 mg/m3) skin
NIOSH IDLH: N.D. See: IDLH INDEX


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and through the skin and by ingestion.

INHALATION RISK:


EFFECTS OF SHORT-TERM EXPOSURE:
Corrosive. The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of the substance may cause lung oedema (see Notes). The effects may be delayed.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 141°C
Melting point: 14°C
Relative density (water = 1): 1.05
Solubility in water:
miscible
Vapour pressure, Pa at 20°C: 413
Relative vapour density (air = 1): 2.5
Flash point: 54°C c.c.
Auto-ignition temperature: 360°C
Explosive limits, vol% in air: 2.4-8
Octanol/water partition coefficient as log Pow: 0.36 (estimated)

ENVIRONMENTAL
DATA


N O T E S

Low oxygen content can diminish effectiveness of inhibitor, posing hazardous polymerization situation. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered. Do not remelt after solidification, as the substance may be unstable. An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
Transport Emergency Card: TEC (R)-80S2218

NFPA Code: H3; F2; R2;

ADDITIONAL INFORMATION



ICSC: 0688 ACRYLIC 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.
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