ICSC 1376 - HEXAHYDRO-4-METHYLPHTHALIC ANHYDRIDE

HEXAHYDRO-4-METHYLPHTHALIC ANHYDRIDE	ICSC: 1376 (April 2024)
Hexahydro-5-methyl-1,3-isobenzofurandione 4-Methylcyclohexane-1,2-dicarboxylic acid anhydride Methylhexahydrophthalic anhydride MHHPA

CAS #: 19438-60-9

EC Number: 243-072-0

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

AVOID ALL CONTACT! PREVENT GENERATION OF MISTS!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. Wheezing. Shortness of breath.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness. Burning sensation.	Protective gloves. Protective clothing.	Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain. Blurred vision.	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. Abdominal pain.	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus, face shield and protective gloves. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria DANGER May cause allergy or asthma symptoms or breathing difficulties if inhaled Causes serious eye damage May cause an allergic skin reaction Transportation UN Classification
STORAGE
Dry. Well closed. Store only in original container.
PACKAGING

HEXAHYDRO-4-METHYLPHTHALIC ANHYDRIDE

ICSC: 1376

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS OILY LIQUID. Physical dangers Chemical dangers Reacts with water. This produces heat and acid.	Formula: C₉H₁₂O₃ / CH₃C₆H₉(CO)₂O Molecular mass: 168.2 Boiling point: 296°C Melting point: -29°C Relative density (water = 1): 1.16 Relative vapour density (air = 1): 5.8 Solubility in water, g/l at 20°C: 8.4 (reaction) Vapour pressure, Pa at 25°C: 0.23 Flash point: 160°C c.c. Auto-ignition temperature: 430°C Octanol/water partition coefficient as log Pow: 2.1

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OILY LIQUID.

Physical dangers

Chemical dangers
Reacts with water. This produces heat and acid.

Formula: C₉H₁₂O₃ / CH₃C₆H₉(CO)₂O
Molecular mass: 168.2
Boiling point: 296°C
Melting point: -29°C
Relative density (water = 1): 1.16
Relative vapour density (air = 1): 5.8
Solubility in water, g/l at 20°C: 8.4 (reaction)
Vapour pressure, Pa at 25°C: 0.23
Flash point: 160°C c.c.
Auto-ignition temperature: 430°C
Octanol/water partition coefficient as log Pow: 2.1

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 severely irritating to the eyes. The substance is irritating to the skin and respiratory tract.	Inhalation risk A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster. 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 severely irritating to the eyes. The substance is irritating to the skin and respiratory tract.

Inhalation risk
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster.

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. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact. Do NOT take working clothes home.

ADDITIONAL INFORMATION

EC Classification

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.

    See Also:
       Toxicological Abbreviations