Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Benzene,1,1'-methylenebis[4-isocyanato-3-methyl-
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139-25-3

139-25-3 structure

139-25-3 structure

Name: 1,1'-Methylenebis(4-isocyanato-3-methylbenzene)
Chemical Name: 1-isocyanato-4-[(4-isocyanato-3-methylphenyl)methyl]-2-methylbenzene
CAS Number: 139-25-3
Molecular Formula: C₁₇H₁₄N₂O₂
Molecular Weight: 278.305
Create Date: 2018-11-24 19:05:17
Modify Date: 2024-01-04 17:10:20

Name	1-isocyanato-4-[(4-isocyanato-3-methylphenyl)methyl]-2-methylbenzene
Synonyms	Benzene, 1,1'-methylenebis[4-isocyanato-3-methyl- Isocyanic acid,ester with di-o-toluenemethane Bis(4-isocyanato-3-methylphenyl)methane 4,4'-Diisocyanato-3,3'-dimethyldiphenylmethane 1,1'-Methylenebis(4-isocyanato-3-methylbenzene) Nacconate 310 MFCD00019910 3,3'-dimethyl-4,4'-diisocyanatodiphenylmethane 3,3'-dimethyldiphenylmethane-4,4'-diisocyanate

Density	1.1±0.1 g/cm3
Boiling Point	410.4±45.0 °C at 760 mmHg
Molecular Formula	C₁₇H₁₄N₂O₂
Molecular Weight	278.305
Flash Point	169.5±34.1 °C
Exact Mass	278.105530
PSA	58.86000
LogP	5.86
Vapour Pressure	0.0±1.0 mmHg at 25°C
Index of Refraction	1.576

CHEMICAL IDENTIFICATION

RTECS NUMBER :: NQ8820000

CHEMICAL NAME :: Isocyanic acid, ester with di-o-toluenemethane

CAS REGISTRY NUMBER :: 139-25-3

BEILSTEIN REFERENCE NO. :: 2150383

LAST UPDATED :: 199701

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C17-H14-N2-O2

MOLECULAR WEIGHT :: 278.33

WISWESSER LINE NOTATION :: OCNR B1 D1R C1 DNCO

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 320 mg/kg

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

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#00946

HS Code	2929109000

75-44-5 structure

75-44-5

838-88-0 structure

838-88-0

~%

139-25-3 structure

139-25-3

Literature: Industrial and Engineering Chemistry, , vol. 48, p. 794,795

Precursor 2
75-44-5 838-88-0
DownStream 0

HS Code	2929109000
Summary	2929109000. other isocyanates. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%