1,2-Benzenedicarboxylic acid
ortho-Phthalic acid
C8H6O4 / C6H4(COOH)2
Molecular mass: 166.1
ICSC # 0768
CAS # 88-99-3
RTECS # TH9625000
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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, alcohol-resistant foam, water spray, 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.
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Exposure
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Cough.
Sore throat.
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Local exhaust.
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Fresh air, rest.
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•Skin
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Redness.
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety spectacles.
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Rinse with plenty of water (remove contact lenses if easily possible).
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•Ingestion
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Sore throat.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Personal protection: P1 filter respirator for inert particles.
Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting.
Wash away remainder with plenty of water.
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Signal: Warning
Excl mark
May be harmful if swallowed
Causes skin irritation
Causes serious eye irritation
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Important Data
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Physical State; Appearance:
CRYSTALLINE POWDER.
Physical Dangers:
Dust explosion possible if in powder or granular form, mixed with air.
Chemical Dangers:
The solution in water is a weak acid.
Occupational Exposure Limits:
TLV not established.
MAK: IIb (not established but data is available)
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Routes of Exposure:
Inhalation Risk:
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed, especially if powdered
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
,
the skin
and
the respiratory tract
.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Melting point (decomposes): 191 °C
Relative density (water = 1): 1.6
Solubility in water, g/100 ml at 25°C: 0.625
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Relative vapour density (air = 1): 5.7
Flash point: 168°C c.c.
Octanol/water partition coefficient as log Pow: 0.73
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Environmental
Data
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N O T E S
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ADDITIONAL INFORMATION
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ICSC: 0768
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PHTHALIC 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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