2-Methylcyclohexa-2,5-diene-1,4-dione

Names

[ CAS No. ]:
553-97-9

[ Name ]:
2-Methylcyclohexa-2,5-diene-1,4-dione

[Synonym ]:
2-methylbenzoquinone
2-Methylquinone
p-Toluquinone
2-Methyl-1,4-benzoquinone
MFCD00001603
2,5-Cyclohexadiene-1,4-dione, 2-methyl-
2-methyl-p-benzoquinone
2-Methyl-2,5-cyclohexadiene-1,4-dione
Methylquinone
2-methylbenzo-1,4-quinone
Tolylquinone
monomethyl-1,4-benzoquinone
Methylbenzoquinone
Toluquinone
EINECS 209-056-2
p-Benzoquinone,2-methyl
Methyl-p-benzoquinone
methyl-1,4-benzoquinone

Chemical & Physical Properties

[ Density]:
1.2±0.1 g/cm3

[ Boiling Point ]:
186.6±15.0 °C at 760 mmHg

[ Melting Point ]:
66-67 °C(lit.)

[ Molecular Formula ]:
C₇H₆O₂

[ Molecular Weight ]:
122.121

[ Flash Point ]:
64.9±17.4 °C

[ Exact Mass ]:
122.036781

[ PSA ]:
34.14000

[ LogP ]:
0.86

[ Vapour Pressure ]:
0.7±0.4 mmHg at 25°C

[ Index of Refraction ]:
1.524

[ Water Solubility ]:
insoluble

MSDS

Click to get detail MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DK6300000

CHEMICAL NAME :: p-Benzoquinone, 2-methyl-

CAS REGISTRY NUMBER :: 553-97-9

LAST UPDATED :: 199710

DATA ITEMS CITED :: 5

MOLECULAR FORMULA :: C7-H6-O2

MOLECULAR WEIGHT :: 122.13

WISWESSER LINE NOTATION :: L6V DVJ B1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 250 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :: Mutation in microorganisms

TEST SYSTEM :: Bacteria - Salmonella typhimurium

DOSE/DURATION :: 1200 nmol/plate

REFERENCE :: MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 347,37,1995 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X7308 No. of Facilities: 7 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 1822 (estimated) No. of Female Employees: 272 (estimated)

Safety Information

[ Symbol ]:

GHS07

[ Signal Word ]:
Warning

[ Hazard Statements ]:
H302-H315-H319-H335

[ Precautionary Statements ]:
P261-P305 + P351 + P338

[ Personal Protective Equipment ]:
dust mask type N95 (US);Eyeshields;Faceshields;Gloves

[ Hazard Codes ]:
T:Toxic;

[ Risk Phrases ]:
R25;R36/37/38

[ Safety Phrases ]:
S26-S45-S37/39-S28A

[ RIDADR ]:
NONH for all modes of transport

[ WGK Germany ]:
3

[ RTECS ]:
DK6300000

[ Packaging Group ]:
II; III

[ Hazard Class ]:
4.1

[ HS Code ]:
29146990

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

DownStream

Customs

[ HS Code ]: 2914690090

[ Summary ]:
2914690090 other quinones。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

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