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NIOSH

PYROGALLIC ACID

ICSC: 0770

1,2,3-Benzenetriol
1,2,3-Trihydroxybenzene
Pyrogallol
C6H6O3 / C6H3(OH)3
Molecular mass: 126.1
ICSC # 0770 		CAS # 87-66-1
RTECS # UX2800000
EC # 604-009-00-6
April 04, 2006 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible.
NO open flames.
Water. Foam. Dry powder. Carbon dioxide.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.

EXPOSURE
PREVENT DISPERSION OF DUST!

•INHALATION Cough. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention, if you feel unwell.
•SKIN Redness.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
•EYES Redness. Pain.
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Vomiting. Diarrhoea.
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Personal protection: P2 filter respirator for harmful particles. Do NOT let this chemical enter the environment. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place.
Separated from strong oxidants, strong bases.

Xn symbol
R: 20/21/22-68-52/53
S: 2-36/37-61
Signal: Warning
Excl mark-Health haz
Harmful if swallowed
Causes serious eye irritation
Suspected of causing genetic defects
ICSC: 0770 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.

PYROGALLIC ACID

ICSC: 0770

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PHYSICAL STATE; APPEARANCE:
WHITE SOLID IN VARIOUS FORMS , TURNS GREY ON EXPOSURE TO LIGHT AND AIR.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The solution in water is a weak acid. Reacts with oxidants and bases.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by ingestion.

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes and the respiratory tract and is mildly irritating to the skin

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

PHYSICAL
PROPERTIES

Boiling point: 309°C
Melting point: 131-134°C
Relative density (water = 1): 1.45
Solubility in water: good (60 g/100 ml at 20°C)
Vapour pressure, kPa at 168°C: 1.33
Octanol/water partition coefficient as log Pow: 0.970 (est.)

ENVIRONMENTAL
DATA

The substance is harmful to aquatic organisms.

N O T E S

Card has been partially updated in August 2007: see GHS classification.

ADDITIONAL INFORMATION



ICSC: 0770 PYROGALLIC 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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