Product Name

  • Name

    1,4-Butanediol, polymer with 1,1'-methylenebis(4-isocyanatobenzene) (9CI)

  • EINECS
  • CAS No. 25805-16-7
  • Density
  • Solubility
  • Melting Point
  • Formula (C15H10N2O2•C4H10O2)x
  • Boiling Point 373.4oC at 760 mmHg
  • Molecular Weight 340.3731
  • Flash Point 154oC
  • Transport Information
  • Appearance
  • Safety Confirmed carcinogen with experimental tumorigenic data by implant route. When heated to decomposition it emits very toxic fumes of CN− and NOx.
  • Risk Codes
  • Molecular Structure Molecular Structure of 25805-16-7 (1,4-Butanediol, polymer with 1,1'-methylenebis(4-isocyanatobenzene) (9CI))
  • Hazard Symbols
  • Synonyms butane-1,4-diol-1,1'-methanediylbis(4-isocyanatobenzene)(1:1);Polyurethane Y-302;MDI-1,4-butanediol copolymer;Sanprene LQX 31;Y 302;Butanediol-MDI copolymer;
  • PSA 99.32000
  • LogP 2.96320

Polyurethane Y-302 Chemical Properties

Product Name: Polyurethane Y-302 (CAS NO.25805-16-7)


Molecular Formula: C19H20N2O4
Molecular Weight: 340.3731g/mol
Mol File: 25805-16-7.mol
Boiling point: 373.4 °C at 760 mmHg
Flash Point: 154 °C
Enthalpy of Vaporization: 62.06 kJ/mol
Vapour Pressure: 9.02E-06 mmHg at 25°C
H-Bond Donor: 2
H-Bond Acceptor: 6
Structure Descriptors of Polyurethane Y-302 (CAS NO.25805-16-7):
  IUPAC Name: butane-1,4-diol; 1-isocyanato-4-[(4-isocyanatophenyl)methyl]benzene
  Canonical SMILES: C1=CC(=CC=C1CC2=CC=C(C=C2)N=C=O)N=C=O.C(CCO)CO
  InChI: InChI=1S/C15H10N2O2.C4H10O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19;5-3-1-2-4-6/h1-8H,9H2;5-6H,1-4H2 
  InChIKey: PFOLXKOIZDGHPB-UHFFFAOYSA-N

Polyurethane Y-302 Consensus Reports

IARC Cancer Review: Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 19 ,1979,p. 303.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) .

Polyurethane Y-302 Safety Profile

Confirmed carcinogen with experimental tumorigenic data by implant route. When heated to decomposition it emits very toxic fumes of CN− and NOx.

Polyurethane Y-302 Specification

 Polyurethane Y-302 ,its CAS NO. is 25805-16-7,the synonyms is Butanediol-MDI copolymer ; MDI-1,4-butanediol copolymer ; Sanprene LQX 31 ; Y 302 ; 1,4-Butanediol, polymer with 1,1'-methylenebis(4-isocyanatobenzene) (9CI) .

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