ICSC 1644 - METHYLHEXAHYDROPHTHALIC ACID ANHYDRIDE

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METHYLHEXAHYDROPHTHALIC ACID ANHYDRIDE	ICSC: 1644 (October 2006)
MHHPA Hexahydromethylphthalic acid anhydride 1,3-Isobenzofurandione, hexahydromethyl-

CAS #: 25550-51-0

EC Number: 247-094-1

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Use water spray, foam, powder, carbon dioxide.

AVOID ALL CONTACT!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Wheezing.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Wear face shield 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	Abdominal pain. Diarrhoea.	Do not eat, drink, or smoke during work.	Rinse mouth. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Collect leaking and spilled liquid in covered containers as far as possible.	According to UN GHS Criteria May cause allergic skin reaction Causes serious eye irritation Causes skin irritation Transportation UN Classification
STORAGE
Separated from food and feedstuffs. Dry.
PACKAGING

METHYLHEXAHYDROPHTHALIC ACID ANHYDRIDE

ICSC: 1644

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS LIQUID. Physical dangers No data. Chemical dangers Decomposes slowly on contact with water. This produces acid. Reacts with acids, alcohols, bases and oxidants.	Formula: C₉H₁₂O₃ Molecular mass: 168.2 Boiling point: 290°C Melting point: -29°C Density: 1.15 g/cm³ Solubility in water at 20°C: reaction Vapour pressure, Pa at 20°C: 1 Relative density of the vapour/air-mixture at 20°C (air = 1): 5.81 Flash point: 145°C

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID.

Physical dangers
No data.

Chemical dangers
Decomposes slowly on contact with water. This produces acid. Reacts with acids, alcohols, bases and oxidants.

Formula: C₉H₁₂O₃
Molecular mass: 168.2
Boiling point: 290°C
Melting point: -29°C
Density: 1.15 g/cm³
Solubility in water at 20°C: reaction
Vapour pressure, Pa at 20°C: 1
Relative density of the vapour/air-mixture at 20°C (air = 1): 5.81
Flash point: 145°C

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation and by ingestion. Effects of short-term exposure The substance is irritating to the skin. The substance is severely irritating to the eyes.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying. 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 and by ingestion.

Effects of short-term exposure
The substance is irritating to the skin. The substance is severely irritating to the eyes.

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

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

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. Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.

ADDITIONAL INFORMATION

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

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