ICSC 1645 - METHYLTETRAHYDROPHTHALIC ANHYDRIDE

METHYLTETRAHYDROPHTHALIC ANHYDRIDE	ICSC: 1645 (April 2008)
MTHPA Tetrahydromethyl-1,3-isobenzofuranedione 1,2,3,6-tetrahydromethylphthalic anhydride 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydromethyl-

CAS #: 26590-20-5

EC Number: 247-830-1

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible.	NO open flames.	In case of fire in the surroundings, use appropriate extinguishing media.

AVOID ALL CONTACT!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest.
Skin	Redness.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention if skin irritation occurs.
Eyes	Redness.	Wear face shield or eye protection in combination with breathing protection.	Rinse with plenty of water (remove contact lenses if easily possible).
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Collect leaking liquid in covered containers.	According to UN GHS Criteria DANGER May cause allergic or asthmatic symptoms or breathing difficulties if inhaled May cause allergic skin reaction Transportation UN Classification
STORAGE

PACKAGING

METHYLTETRAHYDROPHTHALIC ANHYDRIDE

ICSC: 1645

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance OILY LIQUID. Physical dangers Chemical dangers	Formula: C₉H₁₀O₃ Molecular mass: 166.2 Boiling point: 124°C Melting point: -29°C Flash point: 350°C

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
OILY LIQUID.

Physical dangers

Chemical dangers

Formula: C₉H₁₀O₃
Molecular mass: 166.2
Boiling point: 124°C
Melting point: -29°C
Flash point: 350°C

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure	Inhalation risk Effects of long-term or repeated exposure Repeated or prolonged inhalation may cause asthma. See Notes. The substance may have effects on the skin. This may result in contact urticaria.

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure

Inhalation risk

Effects of long-term or repeated exposure
Repeated or prolonged inhalation may cause asthma. See Notes. The substance may have effects on the skin. This may result in contact urticaria.

OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.00007 ppm as TWA; 700 μg/100 cm² (surface limit value); 0.0003 ppm as STEL; (skin); (DSEN); (RSEN)

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.

ADDITIONAL INFORMATION

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

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    See Also:
       Toxicological Abbreviations