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
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible.
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NO open flames.
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Powder, water spray, foam, carbon dioxide.
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Explosion
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Finely dispersed particles form explosive mixtures in air.
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Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.
Prevent build-up of electrostatic charges (e.g., by grounding).
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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PREVENT DISPERSION OF DUST!
STRICT HYGIENE!
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•Inhalation
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Cough.
Sore throat.
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Local exhaust or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
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•Eyes
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Redness.
Pain.
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Safety goggles,
or eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Rest.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into plastic containers; if appropriate, moisten first to prevent dusting.
Wash away remainder with plenty of water.
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Xi symbol
R: 36
S: 2
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Important Data
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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).
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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.
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Physical
Properties
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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
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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
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Environmental
Data
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N O T E S
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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.
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ADDITIONAL INFORMATION
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ICSC: 0369
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ADIPIC ACID
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(C) IPCS, CEC, 1994
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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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