ICSC 0770 - PYROGALLIC ACID

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PYROGALLIC ACID	ICSC: 0770 (April 2006)
1,2,3-Benzenetriol 1,2,3-Trihydroxybenzene Pyrogallol

CAS #: 87-66-1

EC Number: 201-762-9

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Finely dispersed particles form explosive mixtures in air.	NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.	Use water, foam, dry powder, carbon dioxide.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat.	Use local exhaust or breathing protection.	Fresh air, rest. Seek 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.	Wear safety spectacles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Vomiting. Diarrhoea.	Do not eat, drink, or smoke during work.	Rinse mouth. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria WARNING Harmful if swallowed Causes serious eye irritation Suspected of causing genetic defects Transportation UN Classification
STORAGE
Separated from strong oxidants and strong bases.
PACKAGING

PYROGALLIC ACID

ICSC: 0770

PHYSICAL & CHEMICAL INFORMATION
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.	Formula: C₆H₆O₃ / C₆H₃(OH)₃ Molecular mass: 126.1 Boiling point: 309°C Melting point: 131-134°C Relative density (water = 1): 1.45 Solubility in water, g/100ml at 20°C: 60 (good) Vapour pressure, kPa at 168°C: 1.33 Octanol/water partition coefficient as log Pow: 0.970 (estimated)

PHYSICAL & CHEMICAL INFORMATION

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.

Formula: C₆H₆O₃ / C₆H₃(OH)₃
Molecular mass: 126.1
Boiling point: 309°C
Melting point: 131-134°C
Relative density (water = 1): 1.45
Solubility in water, g/100ml at 20°C: 60 (good)
Vapour pressure, kPa at 168°C: 1.33
Octanol/water partition coefficient as log Pow: 0.970 (estimated)

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by ingestion. Effects of short-term exposure The substance is irritating to the eyes and respiratory tract. The substance is mildly irritating to the skin.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. Effects of long-term or repeated exposure Repeated or prolonged contact may cause skin sensitization.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by ingestion.

Effects of short-term exposure
The substance is irritating to the eyes and respiratory tract. The substance is mildly irritating to the skin.

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

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization.

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is harmful to aquatic organisms.

NOTES

ADDITIONAL INFORMATION

EC Classification
Symbol: Xn; R: 20/21/22-68-52/53; S: (2)-36/37-61

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