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Hazardous Chemicals Handbook (pdf) - CCC

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250 REACTIVE CHEMICALS<br />

Table 7.20 Properties of common monomers<br />

Flash Ignition Flammable Specific Vapour Boiling Properties<br />

point temp. limits gravity density point<br />

(°C) (°C) (% by vol. (Water (Air = 1.0) (°C)<br />

in air) = 1.0)<br />

Acetaldehyde –38 185 4.0–55.0 0.8 1.5 21 Colourless fuming liquid<br />

(Acetic aldehyde, Pungent odour<br />

ethanal) Irritant<br />

CH3CHO Water soluble<br />

Can polymerize<br />

exothermically, form<br />

explosive peroxides, or<br />

react violently with other<br />

chemicals<br />

Acrolein –26 278 2.8–31.0 0.8 1.9 53 Colourless/yellow liquid<br />

(Allyl aldehyde, Pungent unpleasant odour<br />

propenal) Water soluble<br />

CH2:CHCHO Irritant<br />

Can polymerize<br />

exothermically with<br />

strong alkalis, heat or light<br />

Can form peroxides<br />

Acrylic acid 54 – – 1.1 2.5 140 Colourless, water soluble<br />

(Propenoic acid, liquid<br />

propene acid) Freezing point 14°C<br />

CH2:CHCOOH Polymerizes readily with<br />

oxygen<br />

Must be inhibited<br />

Acrylonitrile 0 481 3.0–17.0 0.8 1.8 77 Colourless, partially water<br />

(Vinyl cyanide, soluble liquid<br />

propenenitrile) Experimental carcinogen<br />

CH2:CHCN Polymerizes violently with<br />

organic peroxides or<br />

concentrated caustic<br />

alkalis<br />

Highly toxic<br />

Usually inhibited<br />

1,3-Butadiene –76 450 2.0–11.5 0.6 1.9 –4 Colourless, odourless<br />

(Butadiene, liquefiable gas<br />

vinylethylene) Polymerizes readily,<br />

CH2:CHCH:CH2 particularly if O2 or<br />

traces of catalyst present<br />

Can form explosive peroxides<br />

Normally contains inhibitor<br />

(liquid phase) and<br />

antioxidant<br />

Epichlorhydrin 32 – – 1.2 3.3 115 Colourless, partly water<br />

(Chloropropylene soluble liquid<br />

oxide) Highly toxic<br />

CH2:OCHCH2Cl Polymerizes exothermically<br />

with acids, bases, certain<br />

salts and catalysts<br />

Can react with water<br />

Ethyl acrylate 15 – 1.8–– 1.2 – 100 Colourless liquid<br />

CH2:CHCOOC2H5 Acrid odour<br />

Polymerizes readily,<br />

accelerated by heat, light,<br />

organic peroxides<br />

Irritant

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