Styrene CAS 100-42-5
Introduction
Styrene SDEB is a type of styrene produced by catalytic dehydrogenation of ethylbenzene. It is used to manufacture polystyrene, ABS plastic, styrene acrylonitrile, latex, and rubber.
Names and Identifiers
| Name | Styrene |
| Synonyms | SM Styrol STYROL Styrene Cinnamol CINNAMENE FEMA 3233 Cinnamene VINYLBENZENE Vinylbenzene Vinyl benzene PHENYLETHYLENE Ethenylbenzene ETHENYLBENZENE Phenylethylene STYRENE MONOMER Styrolene Styrene Monomer styrene monomer stab. |
| CAS | 100-42-5 |
| EINECS | 202-851-5 |
| InChI | InChI=1/C8H8/c/h2-7H,1H2 |
| InChIKey | PPBRXRYQALVLMV-UHFFFAOYSA-N |
Physico-chemical Properties
| Molecular Formula | C8H8 |
| Molar Mass | 104.15 |
| Density | 0.906 g/mL at 25 °C |
| Melting Point | -31 °C (lit.) |
| Boling Point | 145-146 °C (lit.) |
| Flash Point | 88°F |
| Water Solubility | 0.3 g/L (20 ºC) |
| Solubility | 0.24g/l |
| Vapor Presure | 12.4 mm Hg ( 37.7 °C) |
| Vapor Density | 3.6 (vs air) |
| Appearance | Liquid |
| Specific Gravity | 0.909 |
| Color | Colorless |
| Exposure Limit | TLV-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). |
| Merck | 14,8860 |
| BRN | 1071236 |
| pKa | >14 (Schwarzenbach et al., 1993) |
| Storage Condition | Store at |
| 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, |
| Sensitive | Air Sensitive |
| Explosive Limit | 1.1-8.9%(V) |
| Refractive Index | n20/D 1.546(lit.) |
| Physical and Chemical Properties | Colorless 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. |
| Use | Mainly used as polystyrene, synthetic rubber, engineering plastics, ion exchange resin and other raw materials |
Risk and Safety
| Risk Codes | R10 – 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 Description | S23 – 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 IDs | UN 2055 3/PG 3 |
| WGK Germany | 2 |
| RTECS | WL3675000 |
| TSCA | Yes |
| HS Code | 2902 50 00 |
| Hazard Class | 3 |
| Packing Group | III |
| Toxicity | LD50 in mice (mg/kg): 660 ± 44.3 i.p.; 90 ± 5.2 i.v. |
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