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Styrene CAS 100-42-5

Names and IdentifiersNameStyreneSynonymsSMStyrolSTYROLStyreneCinnamolCINNAMENEFEMA 3233Cinnamen

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Names and Identifiers


NameStyrene
SynonymsSM
Styrol
STYROL
Styrene
Cinnamol
CINNAMENE
FEMA 3233
Cinnamene
VINYLBENZENE
Vinylbenzene
Vinyl benzene
PHENYLETHYLENE
Ethenylbenzene
ETHENYLBENZENE
Phenylethylene
STYRENE MONOMER
Styrolene
Styrene Monomer
styrene monomer stab.
CAS100-42-5
EINECS202-851-5
InChIInChI=1/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2
InChIKeyPPBRXRYQALVLMV-UHFFFAOYSA-N


Fysisk-kemiska egenskaper


Molecular FormulaC8H8
Molarmassa104.15
Täthet0.906 g/mL at 25 °C
Melting Point-31 °C (lit.)
Boling Point145-146 °C (lit.)
Blixtpunkt88°F
Vattenlöslighet0.3 g/L (20 ºC)
Solubility0.24g/l
Vapor Presure12.4 mm Hg ( 37.7 °C)
Vapor Density3.6 (vs air)
UtseendeLiquid
Specific Gravity0.909
FärgColorless
ExponeringsgränsTLV-TWA 50 ppm (~212 mg/m3) (ACGIHand NIOSH), 100 ppm (~425 mg/m3)(OSHA and MSHA); ceiling 200 ppm, peak600 ppm/5 min/3 h (OSHA); STEL 100 ppm(~425 mg/m3) (ACGIH).
Merck14.8860
BRN1071236
pKa>14 (Schwarzenbach et al., 1993)
LagringstillståndStore at
StabilityStable, but may polymerize upon exposure to light. Normally shipped with a dissolved inhibitor. Substances to be avoided include strong acids, aluminium chloride, strong oxidizing agents, copper,
SensitiveAir Sensitive
Explosive Limit1.1-8.9%(V)
Refractive Indexn20/D 1.546(lit.)
Physical and Chemical PropertiesColorless oily liquid with aromatic odor.
boiling point 145 ℃
freezing point -30.6 ℃
relative density 0.9059
refractive index 1.5467
flash point 31.11 ℃
solubility insoluble in water, soluble in ethanol and ether.
UseMainly used as polystyrene, synthetic rubber, engineering plastics, ion exchange resin and other raw materials


Risk and Safety


Risk CodesR10 – Flammable
R20 – Harmful by inhalation
R36/38 – Irritating to eyes and skin.
R40 – Limited evidence of a carcinogenic effect
R36/37/38 – Irritating to eyes, respiratory system and skin.
R39/23/24/25 –
R23/24/25 – Toxic by inhalation, in contact with skin and if swallowed.
R11 – Highly Flammable
R48/20 –
R63 – Possible risk of harm to the unborn child
Safety DescriptionS23 – Do not breathe vapour.
S36 – Wear suitable protective clothing.
S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S16 – Keep away from sources of ignition.
S45 – In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S36/37 – Wear suitable protective clothing and gloves.
S7 – Keep container tightly closed.
S46 – If swallowed, seek medical advice immediately and show this container or label.
UN IDsUN 2055 3/PG 3
WGK Germany2
RTECSWL3675000
TSCAYes
HS Code2902 50 00
Hazard Class3
Packing GroupIII
ToxicityLD50 in mice (mg/kg): 660 ± 44.3 i.p.; 90 ± 5.2 i.v.


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