Tuesday, 09 August 2011 01:28

Isocyanates: Physical & Chemical Properties

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Chemical Name
CAS-Number

Colour/Form

Boiling Point (°C)

Melting Point (°C)

Molecular Weight

Solubility in Water

Relative Density (water=1)

Relative Vapour Density (air=1)

Vapour Pressure/ (Kpa)

Inflam.
Limits

Flash Point (°C)

Auto Ignition Point ( °C)

CYCLOHEXYL ISOCYANATE
3173-53-3

liquid

168

125.16

reacts

0.98

4.3

48 cc

DIANISIDINE DIISOCYANATE
91-93-0

grey to brown powder

112

296.30

ETHYL ISOCYANATE
109-90-0

60

71.1

insol

0.9031

HEXAMETHYLENE DIISOCYANATE
822-06-0

liquid

255

-67

168.2

reacts

1.0528

5.81

@ 25 °C

0.9 ll
9.5 ul

140 oc

454

ISOPHORONE DIISOCYANATE
4098-71-9

colourless to slightly yellow liquid

@ 10 torr

-60

222.32

reacts

1.062 g/ml

0.04 Pa

155-161

430

METHYLENE BISPHENYL ISOCYANATE
101-68-8

light-yellow, fused solid; crystals

@ 5 mm Hg

37

250.27

0.2 g/100 ml

@ 70 °C

8.6

196 cc

240

METHYL ISOCYANATE
624-83-9

colourless liquid

39.5

-45

57.1

v sol

0.9599

1.42

46.4

5.3 ll
26 ul

-7 cc

534

1,5-NAPHTYLENE DIISOCYANATE
3173-72-6

crystals

130

210.19

PHENYL ISOCYANATE
103-71-9

liquid

158-168

-30

119.12

@ 19.6 °C/4 °C

TOLUENE DIISOCYANATE
26471-62-5

clear colourless to pale yellow liquid

251

11-14

@ 25 °C

0.01 torr

TOLUENE-2,4-DIISO­CYANATE
584-84-9

a water-white liquid which turns straw-coloured on standing; clear to light yellow liquid or crystals; colourless to pale yellow, solid or liquid

251

20.5

174.15

reacts

1.2244

6.0

1.3 Pa

0.9 ll
9.5 ul

132 cc

620

TOLUENE-2,6-DIISO­CYANATE
91-08-7

@ 18 mm Hg

 

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