ICSC 1372 - TETRAHYDROPHTHALIC ANHYDRIDE

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TETRAHYDROPHTHALIC ANHYDRIDE	ICSC: 1372 (March 2001)
4-Cyclohexene-1,2-dicarboxylic anhydride 3a,4,7,7a-Tetrahydro-1,3-isobenzofurandione THPA 1,2,3,6-Tetrahydrophthalic anhydride

CAS #: 85-43-8

UN #: 2698

EC Number: 201-605-4

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible.	NO open flames.	Use water spray, powder, foam, carbon dioxide.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. Wheezing. Shortness of breath.	Use local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Refer for medical attention.
Skin	Redness. Burning sensation.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain. Blurred vision. Severe deep burns.	Wear safety goggles or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Burning sensation.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Do NOT induce vomiting.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
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. Do NOT let this chemical enter the environment. Personal protection: P2 filter respirator for harmful particles.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 8; UN Pack Group: III
STORAGE
Separated from food and feedstuffs. Dry. Well closed.
PACKAGING
Do not transport with food and feedstuffs.

TETRAHYDROPHTHALIC ANHYDRIDE

ICSC: 1372

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance WHITE CRYSTALLINE POWDER. Physical dangers Chemical dangers Decomposes on contact with hot surfaces or flames. This produces corrosive fumes. Reacts with oxidants. Reacts with water. This produces heat and tetrahydrophthalic acid.	Formula: C₈H₈O₃ / C₆H₈(CO)₂O Molecular mass: 152.2 Boiling point at 6.7kPa: 195°C Melting point: 102°C Density: 1.4 g/cm³ Solubility in water: reaction Vapour pressure, Pa at 20°C: 1 Relative vapour density (air = 1): 5.3 Flash point: 157°C o.c. Auto-ignition temperature: 450°C

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALLINE POWDER.

Physical dangers

Chemical dangers
Decomposes on contact with hot surfaces or flames. This produces corrosive fumes. Reacts with oxidants. Reacts with water. This produces heat and tetrahydrophthalic acid.

Formula: C₈H₈O₃ / C₆H₈(CO)₂O
Molecular mass: 152.2
Boiling point at 6.7kPa: 195°C
Melting point: 102°C
Density: 1.4 g/cm³
Solubility in water: reaction
Vapour pressure, Pa at 20°C: 1
Relative vapour density (air = 1): 5.3
Flash point: 157°C o.c.
Auto-ignition temperature: 450°C

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

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol.

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

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

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

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is harmful to aquatic organisms.

NOTES
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.

ADDITIONAL INFORMATION

EC Classification
Symbol: Xn; R: 41-42/43-52/53; S: (2)-22-24-26-37/39-61; Note: C

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