Polystyrene

Insoluble in water and less dense than water. Contact may cause irritate skin, eyes, and mucous membranes. May be toxic by ingestion.;Styrene monomer, stabilized appears as a clear colorless to dark liquid with an aromatic odor. Vapors heavier than air and irritating to the eyes and mucous membranes. Subject to polymerization. If the polymerization takes place inside a closed container, the container may rupture violently. Less dense than water and insoluble in water. Used to make plastics, paints, and synthetic rubber.;GasVapor; Liquid; PelletsLargeCrystals; PelletsLargeCrystals, Liquid;Liquid;Liquid;COLOURLESS-TO-YELLOW OILY LIQUID.;COLOURLESS SOLID IN VARIOUS FORMS.;Colorless to yellow, oily liquid with a sweet, floral odor.;Colorless to yellow, oily liquid with a sweet, floral odor.

Benzene, ethenyl-, homopolymer; Styrene, polymers; Poly(vinylbenzene); Polyflex (vinyl polymer); PS 100 (styrene polymer); Styrafoil; Styrene homopolymer; Styrene polymer; Styrene-N,N,N',N'-tetramethylethylenediamine copolymer

30-80°C

240°C

88 °F (NTP, 1992);32.0 °C (89.6 °F) - closed cup;88 °F (31 °C) - closed cup;34.4 °C (Tag closed cup); 36.7 °C (Tag open cup).;31 °C c.c.;345-360 °C;88°F;88°F

95%

1.04-1.13 g/cm3

Beads or pellets

Extrusion molded foamed packaging, dinnerware, bottles and toys.

Store at RT

1.5916

Stable under recommended storage conditions. Test for peroxide formation before distillation or evaporation. Test for peroxide formation or discard after 1 year.;On exposure to light and air it slowly undergoes polymerization and oxidation with formation of peroxides, etc..;It is a storage hazard above 32 °C.;... Styrene is stabilized by a polymerization inhibitor (often tertbutylcatechol). If this is not present in adequate concn, styrene can polymerize and explode its container. The polymerization is also speeded up by temperatures above 66 °C (150 °F).

2.95 (LogP);2.95;log Kow = 2.95;2.95;3.0

4.3 mm Hg at 59 °F ; 9.5 mm Hg at 86° F; 10 mm Hg at 95° F (NTP, 1992);6.40 mmHg;6.40 mm Hg at 25 °C;Vapor pressure, kPa at 20 °C: 0.67;5 mmHg;5 mmHg

0.00275 atm cu m/mole at 25 °C

Hazardous decomposition products formed under fire conditions - Carbon oxides.

Characteristic, sweet, balsamic, almost floral odor that is extremely penetrating

Harmless-use normal precautions

Exercise normal care

P262