Neoprene - Materials / Alfa Chemistry

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Neoprene

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Catalog Number

ACMA00016637

Product Name

Neoprene

Category

Polymers

Description

Chloroprene, stabilized appears as a clear colorless liquid. Flash point -4°F. May polymerize exothermically if heated or contaminated. If polymerization takes place inside a container, the container may rupture violently. Less dense than water. Vapors heavier than air. Used to make neoprene rubber.;Liquid;COLOURLESS LIQUID WITH PUNGENT ODOUR.;Colorless liquid with a pungent, ether-like odor.;Colorless liquid with a pungent, ether-like odor.

IUPAC Name

2-chlorobuta-1,3-diene

Molecular Weight

88.53g/mol

Molecular Formula

C4H5Cl;CH2=CClCH=CH2;C4H5Cl

Canonical SMILES

C=CC(=C)Cl

InChI

InChI=1S/C4H5Cl/c1-3-4(2)5/h3H,1-2H2

InChI Key

YACLQRRMGMJLJV-UHFFFAOYSA-N

Boiling Point

138.9 °F at 760 mm Hg (NTP, 1992);59.4 °C;59.4 °C;59.4 °C;139°F;139°F

Melting Point

-202 °F (NTP, 1992);-130.0 °C;Varies with the temperature of crystallization, and the time and temperature of any subsequent annealing; approximately 30-70 °C;-130 °C;-130 °C;-153°F;-153°F

Flash Point

-4 °F (NTP, 1992);-20 °C (OPEN CUP);-20 °C c.c.;-4°F;-4°F

Density

0.9583 at 68 °F (USCG, 1999);1.23;0.956 @ 20 °C/4 °C;Relative density (water = 1): 0.96;0.96;0.96

Solubility

Slightly soluble (NTP, 1992);Miscible in ethyl ether, acetone, and benzene; slightly soluble in water.;Soluble in alcohol, diethyl ether;Solubility in water, g/100ml at 20 °C: 0.03 (very poor);Slight

Color/Form

Colorless liquid

Complexity

54.7

Covalently-Bonded Unit Count

EC Number

204-818-0;618-463-8

Exact Mass

88.007978g/mol

Formal Charge

Heavy Atom Count

ICSC Number

0133

Log P

2.2 (calculated)

MeSH Entry Terms

Chloroprene

Monoisotopic Mass

88.007978g/mol

NSC Number

18589

Odor

Pungent, ether-like odor

Other Experimental

Vulcanized with metallic oxides rather than sulfur; resistant to oils, oxygen, ozone, corona discharge, and electric current; isocyanate-modified form has high flame resistance.;Brittle point: -35 °C; softens @ approximately 80 °C;Polymerizes at room temperature unless inhibited with antioxidants.;Per cent in saturated air: 28 @ 25 °C; conversion factors: 1 mg/l approximates 276.5 ppm and 1 ppm approximates 3.62 mg/cu m @ 25 °C, 760 torr.;Density of saturated air: 1.57 (air= 1);RAPIDLY OXIDIZES TO FORM PEROXIDES AND ACIDIC MATERIALS.;VAPOR PRESSURE: 300 MM HG @ 32.8 °C;Brittle point: -35 °F; softens: @ approx 80 °F

Refractive Index

Index of refraction: 1.5512 at 20 °C;Index of refraction: 1.4583 @ 20 °C/D

Rotatable Bond Count

RTECS Number

EI9625000

Stability

RESISTANT TO OILS, OXYGEN, OZONE, CORONA DISCHARGE, & ELECTRIC CURRENT;POLYMERIZES ON STANDING

UNII

42L93DWV3A

UN Number

1991;1991;1991;1991;1991

Vapor Density