1,1'-Methylenebis(4-isocyanato-3-methylbenzene)

Modify Date: 2025-08-25 18:55:37

1,1'-Methylenebis(4-isocyanato-3-methylbenzene) structure	Common Name	1,1'-Methylenebis(4-isocyanato-3-methylbenzene)
	CAS Number	139-25-3	Molecular Weight	278.305
	Density	1.1±0.1 g/cm3	Boiling Point	410.4±45.0 °C at 760 mmHg
	Molecular Formula	C₁₇H₁₄N₂O₂	Melting Point	N/A
	MSDS	N/A	Flash Point	169.5±34.1 °C

Name	1-isocyanato-4-[(4-isocyanato-3-methylphenyl)methyl]-2-methylbenzene
Synonym	More Synonyms

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

MSDS(Chinese)

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

phosgene

CAS#:75-44-5

4,4'-Methylene ...

CAS#:838-88-0

1,1'-Methyleneb...

CAS#:139-25-3

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

Precursor 2
CAS#:75-44-5 phosgene CAS#:838-88-0 4,4'-Methylene ...
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%

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

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.

Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Benzene,1,1'-methylenebis[4-isocyanato-3-methyl-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Get all suppliers and price by the below link:

1,1'-Methylenebis(4-isocyanato-3-methylbenzene) suppliers

1,1'-Methylenebis(4-isocyanato-3-methylbenzene) price

1,1'-Methylenebis(4-isocyanato-3-methylbenzene)

Names

Chemical & Physical Properties

MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

Safety Information

Synthetic Route

Precursor & DownStream

Customs

Synonyms

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.