International Chemical Safety Cards

PYROGALLIC ACID

ICSC: 0770

PYROGALLIC ACID
1,2,3-Benzenetriol
1,2,3-Trihydroxybenzene
Pyrogallol
C₆H₆O₃ / C₆H₃(OH)₃
Molecular mass: 126.1
CAS # 87-66-1
RTECS # UX2800000
ICSC # 0770

EC # 604-009-00-6

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Combustible.	NO open flames.	Powder, alcohol-resistant foam, water spray, carbon dioxide.
EXPLOSION

EXPOSURE		PREVENT DISPERSION OF DUST! STRICT HYGIENE!
INHALATION	Cough. Sore throat.	Local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
SKIN	Redness. Pain.	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	Diarrhoea. Vomiting. Weakness. Hypothermia. Fine temors. Muscular incoordination. Loss of reflexes. Coma. Asphysia.	Do not eat, drink, or smoke during work.	Rinse mouth. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: P2 filter respirator for harmful particles).

Separated from strong oxidants, strong bases.

Airtight.
Xn symbol
R: 20/21/22
S: (2-)

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0770

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

PYROGALLIC ACID

ICSC: 0770

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PHYSICAL STATE; APPEARANCE:
ODOURLESS WHITE CRYSTALLINE POWDER , TURNS GRAY 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 (OELs):
TLV not established.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and 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 irritates the eyes, the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization. May cause genetic damage in humans.

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

IMPORTANT LEGAL NOTICE:

Neither the CEC or the IPCS nor any person acting on behalf of 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.