ChemicalBook--->CAS DataBase List--->26447-40-5

26447-40-5

26447-40-5 Structure

26447-40-5 Structure
IdentificationMore
[Name]

4,4'-METHYLENEBIS(PHENYL ISOCYANATE)
[CAS]

26447-40-5
[Synonyms]

4,4'-DIISOCYANATODIPHENYLMETHANE
4,4'-DIPHENYLMETHANE DIISOCYANATE
4,4'-MDI
4,4'-METHYLENEBIS(PHENYL ISOCYANATE)
BIS(4-ISOCYANATOPHENYL)METHANE
DIPHENYLMETHAN-4,4'-DIISOCYANATE
DIPHENYLMETHANE-4,4'-DIISOCYANATE
DIPHENYLMETHANE DIISOCYANATE
MDI
METHYLENEBIS(P-PHENYL ISOCYANATE)
METHYLENEDIPHENYL 4,4'-DIISOCYANATE
METHYLENEDIPHENYLENE DIISOCYANATE
METHYLENEDI-P-PHENYL DIISOCYANATE
METHYLENE DI-P-PHENYLENE DIISOCYANATE
P,P'-DIPHENYLMETHANE DIISOCYANATE
VANCHEM HM-4346
VANCHEM HM-50
Benzene, 1,1'-methylenebis[isocyanato-
11METHYLENEBISISOCYANATOBENZENE
[EINECS(EC#)]

247-714-0
[Molecular Formula]

C15H10N2O2
[MDL Number]

MFCD00036131
[Molecular Weight]

250.25
[MOL File]

26447-40-5.mol
Chemical PropertiesBack Directory
[Melting point ]

42-45℃
[density ]

1.18
[storage temp. ]

2-8°C
[form ]

Flakes
[color ]

White
[CAS DataBase Reference]

26447-40-5(CAS DataBase Reference)
[EPA Substance Registry System]

Diphenylmethane diisocyanate (26447-40-5)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

20-36/37/38-42/43
[Safety Statements ]

23-36/37-45
[RIDADR ]

UN 2811
Hazard InformationBack Directory
[Description]

Methylene diphenyl diisocyanate (MDI) is a white, odorless diisocyanate that may also occur in crystalline form. It exists in three isomers, (2,20-MDI,2,40-MDI, and 4,40-MDI), however, the primary technical/commercial form of MDI is actually polymeric MDI, which is a mixture that contains 25–80% monomeric 4,40-MDI as well as oligomers containing three to six rings and other minor isomers, such as the 2,20-isomer the 4,40 isomer. MDI is most widely used and accounted for 62% of the global market in 2000.
[Uses]

MDI is used to produce polyurethane foams for application in a wide range of retail, commercial, and industrial uses to protect cement, wood, fiberglass, steel, and aluminum surfaces such as truck beds, trailers, boats, foundations, and decks. MDI is also used as a high strength adhesive in industrial and consumer applications.
[Definition]

ChEBI: Diphenylmethane-4,4'-diisocyanate is a diisocyanate consisting of diphenylmethane with two isocyanate groups at the 4- and 4'-positions. It has a role as a hapten and an allergen. It derives from a hydride of a diphenylmethane.
[Environmental Fate]

MDI is the least hazardous of the commonly available isocyanates, however, it is not without toxicity. It has low vapor pressure, which reduces hazards during handling compared to the other major isocyanates, e.g., TDI, HDI. The complex nature of MDI composition and reactions in the environment often makes interpretation difficult. Release of MDI to the atmosphere is low due to its low volatility and since MDI readily degrades to inorganic compounds in the presence of hydroxyl radicals, its atmospheric half-life is short. High exposures involving MDI in ambient environments are expected to be rare. There is no information about levels of various forms of MDI in the ambient air. When MDI is released to water, it reacts readily with water to form mixtures of diisocyanates and amines, which then readily react with more MDI to produce inert, solid, insoluble polyurea. MDI has a transient existence due to its reaction with the water to produce predominantly insoluble polyureas. The evidence indicates that MDI accumulation through the aquatic food chain is extremely unlikely, as might be expected considering the very low solubility and high reactivity of MDI with hydroxyl radicals in aqueous solution.
[Toxicity evaluation]

A definitive mechanism of MDI toxicity is unknown; however, it is speculated that humoral and cellular immunity may be involved in the pathogenesis of hypersensitivity due to isocyanate sensitization responses of both animals and humans.
Questions And AnswerBack Directory
[Storage]

Cool, ventilated, strictly waterproof, moisture-proof, avoid direct sunlight, and keep away from fire and heat sources. The storage temperature should not exceed 20℃ during long-term storage.
26447-40-5 suppliers list
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: +86-0371-55170693 +86-19937530512 , +86-19937530512
Website: https://www.tianfuchem.com/
Company Name: Hubei xin bonus chemical co. LTD
Tel: 86-13657291602
Website: www.chemicalbook.com/ShowSupplierProductsList1549548/0.htm
Company Name: SUZHOU SENFEIDA CHEMICAL CO.,LTD
Tel: +86-0512-83500002 +8615195660023 , +8615195660023
Website:
Company Name: Shanghai Jinhuan Chemical CO.,LTD.
Tel: +86-21-52210535 +8613162045318 , +8613162045318
Website: www.jinhchem.com
Company Name: ABCR GmbH & CO. KG
Tel: 49 721 95061 0
Website: www.abcr.de
Company Name: Otto Chemie Pvt Ltd  
Tel: +91-2222070099 +91-2266382599
Website: www.ottokemi.com
Company Name: Mainchem Co., Ltd.  
Tel: +86-0592-6210733
Website: https://www.mainchem.com
Company Name: Shaanxi Didu New Materials Co. Ltd  
Tel: +86-89586680 +86-13289823923
Website: https://www.dideu.com/en/
Company Name: Shanghai Hanhong Scientific Co.,Ltd.  
Tel: 021-54306202 13764082696
Website: www.hanhongsci.com
Company Name: Syntechem Co.,Ltd  
Tel:
Website: www.syntechem.com
Company Name: Chengdu Ai Keda Chemical Technology Co., Ltd.  
Tel: 4008-755-333 18080918076
Website: http://www.aikeshiji.com
Company Name: Chengdu HuaXia Chemical Reagent Co. Ltd  
Tel: 400-1166-196 13458535857
Website: http://www.hx-r.com
Company Name: Zhengzhou JACS Chemical Co., Ltd.  
Tel: 0371-0371-86259281 15981966935
Website: http://www.jacschem.com
Company Name: Shanghai Yanze Chemical Co., Ltd.  
Tel: 021-13773155751 19975051755
Website: www.chemicalbook.com/showsupplierproductslist1931493/0.htm
Company Name: Wuhan kemike Biomedical Technology Co., Ltd  
Tel: 027-87747081 18186681184
Website: https://www.chemicalbook.com/supplier/23247121/
Company Name: Wuhan Xinyangruihe Chemical Technology Co., Ltd.  
Tel: 13720274133
Website: https://www.chemicalbook.com/supplier/15478905/
Company Name: Guangzhou Yunmen Biotechnology Co., Ltd  
Tel: 18902340307 18902340307
Website: http://www.yx-biotech.cn/
Company Name: WUHAN JIXINYIBANG BIOTECHNOLOGY .,LTD  
Tel: 027-59768661 13297943853
Website: www.chemicalbook.com/supplier/24253670/1.htm
Tags:26447-40-5 Related Product Information
25322-69-4 7758-99-8 75-08-1 107-13-1 822-06-0 101-68-8 552-30-7 101-81-5