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ChemicalBook >> CAS DataBase List >> 4,4'-Diphenylmethane diisocyanate

4,4'-Diphenylmethane diisocyanate

4,4'-Diphenylmethane diisocyanate price.
  • $13 - $722
  • Product name: 4,4'-Diphenylmethane diisocyanate
  • CAS: 101-68-8
  • MF: C15H10N2O2
  • MW: 250.25
  • EINECS:202-966-0
  • MDL Number:MFCD00036131
  • Synonyms:para,para’-methylenebis(phenylisocyanate) ;Rubinate 44;Rubinate LF-168;rubinate44 ;METHYLENEBIS(P-PHENYL ISOCYANATE);METHYLENEDIPHENYL 4,4'-DIISOCYANATE;METHYLENEDI-P-PHENYL DIISOCYANATE;METHYLENE DI-P-PHENYLENE DIISOCYANATE
25 prices
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  • Frontier Specialty Chemicals
  • Sigma-Aldrich
  • TCI Chemical
  • Thermo Scientific Chemicals
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  • Usbiological
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  • ManufacturerFrontier Specialty Chemicals
  • Product numberJK122268
  • Product description4,4′-Methylenebis(phenyl isocyanate) 98%
  • Packaging25g
  • Price$13
  • Updated2021-12-16
  • Buy
  • ManufacturerFrontier Specialty Chemicals
  • Product numberJK122268
  • Product description4,4′-Methylenebis(phenyl isocyanate) 98%
  • Packaging100g
  • Price$18
  • Updated2021-12-16
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number8.20797
  • Product descriptionDiphenylmethane 4,4′-diisocyanate (mixture of di-and triisocyanates) for synthesis
  • Packaging100mL
  • Price$50.8
  • Updated2026-04-30
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number256439
  • Product description4,4′-Methylenebis(phenyl isocyanate) 98%
  • Packaging50g
  • Price$60.8
  • Updated2026-04-30
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number256439
  • Product description4,4′-Methylenebis(phenyl isocyanate) 98%
  • Packaging500g
  • Price$90.9
  • Updated2026-04-30
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number8.20797
  • Product descriptionDiphenylmethane 4,4′-diisocyanate (mixture of di-and triisocyanates) for synthesis
  • Packaging500mL
  • Price$91.2
  • Updated2026-04-30
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number33428
  • Product description4,4′-MDI analyticalstandard
  • Packaging100mg
  • Price$92.7
  • Updated2026-04-30
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number256439
  • Product description4,4′-Methylenebis(phenyl isocyanate) 98%
  • Packaging5kg
  • Price$644
  • Updated2026-04-30
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  • ManufacturerTCI Chemical
  • Product numberD0897
  • Product descriptionMethylenediphenyl 4,4'-Diisocyanate >97.0%(T)
  • Packaging500g
  • Price$55
  • Updated2026-04-30
  • Buy
  • ManufacturerTCI Chemical
  • Product numberD0897
  • Product descriptionMethylenediphenyl 4,4'-Diisocyanate >97.0%(T)
  • Packaging25g
  • Price$27
  • Updated2026-04-30
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  • ManufacturerThermo Scientific Chemicals
  • Product numberL15740
  • Product description4,4'-Methylenebis(phenyl isocyanate), 98%
  • Packaging25g
  • Price$31.6
  • Updated2026-04-24
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  • ManufacturerThermo Scientific Chemicals
  • Product numberL15740
  • Product description4,4'-Methylenebis(phenyl isocyanate), 98%
  • Packaging100g
  • Price$39.65
  • Updated2026-04-24
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  • ManufacturerThermo Scientific Chemicals
  • Product number41428
  • Product descriptionMethylene di-p-phenyl diisocyanate, 98%, flakes 98%
  • Packaging100 g
  • Price$22.65
  • Updated2026-04-24
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  • ManufacturerThermo Scientific Chemicals
  • Product numberL15740
  • Product description4,4'-Methylenebis(phenyl isocyanate), 98%
  • Packaging500g
  • Price$70.65
  • Updated2026-04-24
  • Buy
  • ManufacturerThermo Scientific Chemicals
  • Product number41428
  • Product descriptionMethylene di-p-phenyl diisocyanate, 98%, flakes 98%
  • Packaging500 g
  • Price$71.65
  • Updated2026-04-24
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  • ManufacturerTRC
  • Product numberTRC-M227380-1G
  • Product description4,?4'-?Methylenebis(phenyl Isocyanate)
  • Packaging1g
  • Price$76
  • Updated2026-06-03
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
Frontier Specialty Chemicals JK122268 4,4′-Methylenebis(phenyl isocyanate) 98% 25g $13 2021-12-16 Buy
Frontier Specialty Chemicals JK122268 4,4′-Methylenebis(phenyl isocyanate) 98% 100g $18 2021-12-16 Buy
Sigma-Aldrich 8.20797 Diphenylmethane 4,4′-diisocyanate (mixture of di-and triisocyanates) for synthesis 100mL $50.8 2026-04-30 Buy
Sigma-Aldrich 256439 4,4′-Methylenebis(phenyl isocyanate) 98% 50g $60.8 2026-04-30 Buy
Sigma-Aldrich 256439 4,4′-Methylenebis(phenyl isocyanate) 98% 500g $90.9 2026-04-30 Buy
Sigma-Aldrich 8.20797 Diphenylmethane 4,4′-diisocyanate (mixture of di-and triisocyanates) for synthesis 500mL $91.2 2026-04-30 Buy
Sigma-Aldrich 33428 4,4′-MDI analyticalstandard 100mg $92.7 2026-04-30 Buy
Sigma-Aldrich 256439 4,4′-Methylenebis(phenyl isocyanate) 98% 5kg $644 2026-04-30 Buy
TCI Chemical D0897 Methylenediphenyl 4,4'-Diisocyanate >97.0%(T) 500g $55 2026-04-30 Buy
TCI Chemical D0897 Methylenediphenyl 4,4'-Diisocyanate >97.0%(T) 25g $27 2026-04-30 Buy
Thermo Scientific Chemicals L15740 4,4'-Methylenebis(phenyl isocyanate), 98% 25g $31.6 2026-04-24 Buy
Thermo Scientific Chemicals L15740 4,4'-Methylenebis(phenyl isocyanate), 98% 100g $39.65 2026-04-24 Buy
Thermo Scientific Chemicals 41428 Methylene di-p-phenyl diisocyanate, 98%, flakes 98% 100 g $22.65 2026-04-24 Buy
Thermo Scientific Chemicals L15740 4,4'-Methylenebis(phenyl isocyanate), 98% 500g $70.65 2026-04-24 Buy
Thermo Scientific Chemicals 41428 Methylene di-p-phenyl diisocyanate, 98%, flakes 98% 500 g $71.65 2026-04-24 Buy
TRC TRC-M227380-1G 4,?4'-?Methylenebis(phenyl Isocyanate) 1g $76 2026-06-03 Buy

Properties

Melting point :38-44 °C
Boiling point :392 °C
Density :1.19
vapor pressure :0.066 hPa (20 °C)
refractive index :1.5906 (estimate)
Flash point :196 °C
storage temp. :-20°C
solubility :2g/l (decomposition)
form :solid
color :White to Almost white
Specific Gravity :1.180
explosive limit :0.4%(V)
Water Solubility :decomposes
FreezingPoint :37℃
Sensitive :Moisture Sensitive/Lachrymatory
BRN :797662
Exposure limits :TLV-TWA 0.051 mg/m3 (0.005 ppm) (ACGIH and NIOSH); ceiling (air) 0.204 mg/m3 (0.02 ppm)/10 min (NIOSH and OSHA); IDLH 102 mg/m3 (10 ppm).
Dielectric constant :10.0(Ambient)
Stability :Stable. Combustible. Incompatible with strong oxidizing agents. Reacts violently with alcohols.
InChI :1S/C15H10N2O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19/h1-8H,9H2
InChIKey :UPMLOUAZCHDJJD-UHFFFAOYSA-N
SMILES :O=C=Nc1ccc(Cc2ccc(cc2)N=C=O)cc1
CAS DataBase Reference :101-68-8(CAS DataBase Reference)
IARC :3 (Vol. 19, Sup 7, 71) 1999
NIST Chemistry Reference :Benzene, 1,1'-methylenebis[4-isocyanato-(101-68-8)
EPA Substance Registry System :

Safety Information

Symbol(GHS): Skull and Crossbones (GHS06)Health Hazard (GHS08)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
H370 Causes damage to organs Specific target organ toxicity, single exposure Category 1 Danger P260, P264, P270, P307+P311, P321,P405, P501
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501
Precautionary statements:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and understood.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P272 Contaminated work clothing should not be allowed out of the workplace.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P284 Wear respiratory protection.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention.
P337+P313 IF eye irritation persists: Get medical advice/attention.
P342+P311 IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
P501 Dispose of contents/container to..…

Description

4,4'-Methylenebis(phenyl isocyanate) acts as a monomer in the production of polyurethane. The rigid polyurethane foams are good thermal insulators, which find applications in all freezers and refrigerators, as well as in buildings. It is also used as an industrial strength adhesive, which is available to end consumers as various high-strength bottled glue preparations.

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