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NIOSH

ADIPIC ACID

ICSC: 0369

Hexanedioic acid
1,4-Butanedicarboxylic acid
C6H10O4 / HOOC(CH2)4COOH
Molecular mass: 146.14
ICSC # 0369 		CAS # 124-04-9
RTECS # AU8400000
EC # 607-144-00-9
March 23, 1998 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible.
NO open flames.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding).
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

•INHALATION Cough. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
•SKIN
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
•EYES Redness. Pain.
Safety goggles, 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
Do not eat, drink, or smoke during work.
Rinse mouth. Rest. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Sweep spilled substance into plastic containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water.


Xi symbol
R: 36
S: 2
ICSC: 0369 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.

ADIPIC ACID

ICSC: 0369

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D

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A

PHYSICAL STATE; APPEARANCE:
ODOURLESS, COLOURLESS CRYSTALLINE POWDER.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic and corrosive fumes of valeric acid and other substances. The substance is a weak acid. Reacts with oxidizing materials.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5 mg/m3 (as TWA) (ACGIH 1997).


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol.

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes and the respiratory tract. Inhalation of the aerosol of this substance may cause asthmatic reactions (see Notes).

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation exposure may cause asthma.

PHYSICAL
PROPERTIES

Boiling point: 338°C
Melting point: 152°C
Density: 1.36 g/ml
Solubility in water, g/100 ml at 15°C: 1.4 (moderate)
Vapour pressure, Pa at 18.5°C: 10
Relative vapour density (air = 1): 5.04
Flash point: 196°C c.c.
Auto-ignition temperature: 422°C
Octanol/water partition coefficient as log Pow: 0.08

ENVIRONMENTAL
DATA


N O T E S

The symptoms of asthma 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. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact with this substance.
NFPA Code: H; F1; R0

ADDITIONAL INFORMATION



ICSC: 0369 ADIPIC 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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