Basic information Description Chemical properties Polymerization Reaction Uses Production Hazards Storage References Safety Related Supplier
Styrene Monomer Structure

Styrene Monomer

Chemical Properties

Melting point -31 °C (lit.)
Boiling point 145-146 °C (lit.)
Density  0.906 g/mL at 25 °C
vapor density  3.6 (vs air)
vapor pressure  12.4 mm Hg ( 37.7 °C)
refractive index  n20/D 1.546(lit.)
Flash point 88 °F
storage temp.  Store at <= 20°C.
solubility  0.24g/l
form  Liquid
pka >14 (Schwarzenbach et al., 1993)
Specific Gravity 0.909
color  Colorless
Odor at 0.10 % in triacetin. sweet balsam floral plastic
Odor Type balsamic
Odor Threshold 0.035ppm
explosive limit 1.1-8.9%(V)
Water Solubility  0.3 g/L (20 ºC)
FreezingPoint  -30.6℃
Sensitive  Air Sensitive
Merck  14,8860
BRN  1071236
Henry's Law Constant (x 10-3 atm?m3/mol): 3.91 at 25 °C (static headspace-GC, Welke et al., 1998)
Exposure limits TLV-TWA 50 ppm (~212 mg/m3) (ACGIH and NIOSH), 100 ppm (~425 mg/m3) (OSHA and MSHA); ceiling 200 ppm, peak 600 ppm/5 min/3 h (OSHA); STEL 100 ppm (~425 mg/m3) (ACGIH).
Dielectric constant 2.4(25℃)
Stability Stable, 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, copper alloys, metallic salts, polymerization catalysts and accelerators. Flammable - vapour may travel considerable distance to ignition source
InChIKey PPBRXRYQALVLMV-UHFFFAOYSA-N
LogP 2.96 at 25℃
CAS DataBase Reference 100-42-5(CAS DataBase Reference)
IARC 2A (Vol. 60, 82, 121) 2019
NIST Chemistry Reference Styrene(100-42-5)
EPA Substance Registry System Styrene (100-42-5)

Safety Information

Hazard Codes  Xn,T,F
Risk Statements  10-20-36/38-40-36/37/38-39/23/24/25-23/24/25-11-48/20-63
Safety Statements  23-36-26-16-45-36/37-7-46
RIDADR  UN 2055 3/PG 3
OEB A
OEL TWA: 50 ppm (215 mg/m3), STEL: 100 ppm (425 mg/m3)
WGK Germany  2
RTECS  WL3675000
Autoignition Temperature 914 °F
TSCA  Yes
HS Code  2902 50 00
HazardClass  3
PackingGroup  III
Hazardous Substances Data 100-42-5(Hazardous Substances Data)
Toxicity LD50 in mice (mg/kg): 660 ± 44.3 i.p.; 90 ± 5.2 i.v.
IDLA 700 ppm

MSDS

Usage And Synthesis

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