Methyltetrahydrophthalic anhydride

Modify Date: 2025-08-21 19:06:10

Methyltetrahydrophthalic anhydride Structure
Methyltetrahydrophthalic anhydride structure
 Common Name Methyltetrahydrophthalic anhydride
CAS Number 26590-20-5 Molecular Weight 166.17400
Density 1.25~1.35g/cm3 Boiling Point 308.9ºC at 760mmHg
Molecular Formula C9H10O3 Melting Point 90°C
MSDS N/A Flash Point 146.8ºC

 Names

Name methyltetrahydrophthalic anhydride
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.25~1.35g/cm3
Boiling Point 308.9ºC at 760mmHg
Melting Point 90°C
Molecular Formula C9H10O3
Molecular Weight 166.17400
Flash Point 146.8ºC
Exact Mass 166.06300
PSA 43.37000
LogP 1.04230
Index of Refraction 1.545

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
TI3325000
CHEMICAL NAME :
Phthalic anhydride, methyltetrahydro-
CAS REGISTRY NUMBER :
26590-20-5
LAST UPDATED :
199701
DATA ITEMS CITED :
4
MOLECULAR FORMULA :
C9-H10-O3
MOLECULAR WEIGHT :
166.19
WISWESSER LINE NOTATION :
T56 BVOV GUTJ X1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
2140 uL/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 30,470,1969
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
1410 uL/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 30,470,1969 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X2943 No. of Facilities: 15 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 124 (estimated)

 Safety Information

Risk Phrases R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Phrases S26-S36/37/39
RTECS TI4290000

 Synonyms

MTHPA-EG
MTHPA
Lindride
ac220
AC-METHYL
4-MTHPA
ac220j
MFCD00014585
MTHPA-600
Methyltetrahydrophthalic anhydride
EINECS 234-290-7
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