Styrene
Styrene (stabilised) for synthesis. CAS 100-42-5, EC Number 202-851-5, chemical formula C₆H₅CHCH₂. Styrene (vinylbenzene, styrole) is a colourless, viscous liquid with a pungent odour and tendency to polymerize. Its chemical structure is C6H5.CH=CH2 and its molecular mass 104.15. Styrene is slightly soluble in water, soluble in ethanol and very soluble in benzene and petroleum ether.
- Synonyms: Phenylethylene, Vinylbenzene
- CAS #: 100-42-5
- EC Number: 202-851-5
- Molar Mass: 104.15 g/mol
- Chemical Formula: C₆H₅CHCH₂
- Hill Formula: C₈H₈
Description
Styrene is one of the most important monomers worldwide, and its polymers and copolymers
are used in an increasingly wide range of applications. The major uses are in plastics, latex
paints and coatings, synthetic rubbers, polyesters and styrene-alkyd coatings.
Among the top 50 chemicals worldwide, styrene was twentieth in 1994 with production of
11 270 million pounds. Styrene occurs naturally as a degradation product in cinnamic acid
containing plants, e.g. balsamic trees, and as a by-product of fungal and microbial
metabolism.
Key Specifications Table
| CAS # | EC Number | Hill Formula | Chemical Formula | Molar Mass |
|---|---|---|---|---|
| 100-42-5 | 202-851-5 | C₈H₈ | C₆H₅CHCH₂ | 104.15 g/mol |
| Description | |
|---|---|
| Catalogue Number | JY0108 |
| Synonyms | Phenylethylene, Vinylbenzene |
| Description | Styrene |
| Product Information | |
|---|---|
| CAS number | 100-42-5 |
| EC index number | 601-026-00-0 |
| EC number | 202-851-5 |
| Hill Formula | C₈H₈ |
| Chemical formula | C₆H₅CHCH₂ |
| Molar Mass | 104.15 g/mol |
| HS Code | 2902 50 00 |
| Applications | |
|---|---|
| Application | Styrene (stabilised) for synthesis. CAS 100-42-5, EC Number 202-851-5, chemical formula C₆H₅CHCH₂. |
| Physicochemical Information | |
|---|---|
| Boiling point | 145 °C (1013 hPa) |
| Density | 0.906 g/cm3 (20 °C) |
| Explosion limit | 1.1 – 8.9 %(V) |
| Flash point | 31 °C |
| Ignition temperature | 480 °C |
| Melting Point | -31 °C |
| Saturation concentration (air) | 25.6 g/m3 (20 °C) |
| Vapor pressure | 6 hPa (20 °C) |
| Solubility | 0.24 g/l |
| Toxicological Information | |
|---|---|
| LD 50 oral | LD50 Rat 2650 mg/kg |
| Hazard Statement(s) | H226: Flammable liquid and vapour. H304: May be fatal if swallowed and enters airways. H315: Causes skin irritation. H319: Causes serious eye irritation. H332: Harmful if inhaled. H335: May cause respiratory irritation. H361: Suspected of damaging fertility or the unborn child. H372: Causes damage to organs through prolonged or repeated exposure. H412: Harmful to aquatic life with long lasting effects. |
| Precautionary Statement(s) | P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P273: Avoid release to the environment. P301 + P310: IF SWALLOWED: Immediately call a POISON CENTER/doctor. P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water. P304 + P340 + P312: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell. P331: Do NOT induce vomiting. |
| Signal Word | Danger |
| RTECS | WL3675000 |
| Storage class | 3 Flammable liquids |
| WGK | WGK 2 obviously hazardous to water |
| Disposal | 3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. |
| Safety Information | |
|---|---|
| Categories of danger | flammable, harmful, irritant |
| Storage and Shipping Information | |
|---|---|
| Storage | Store at <= 20°C. |
| Transport Information | |
|---|---|
| Declaration (railroad and road) ADR, RID | UN 2055 , 3, III |
| Declaration (transport by air) IATA-DGR | UN 2055 , 3, III |
| Declaration (transport by sea) IMDG-Code | UN 2055 , 3, III |
| Specifications | |
|---|---|
| Assay (GC, area%) | ≥ 99.0 % (a/a) |
| Density (d 20 °C/ 4 °C) | 0.905 – 0.907 |
| Identity (IR) | passes test |
| The material is stabilised with 4-tert-Butylpyrocatechol. At time of analytical testing a content of >10 ppm stabiliser was determined. |
|
| Appearance | Colorless clear liquid |
| Purity(GC) | min. 99.0 % |
| Melting Point | -31 °C |
| Boiling Point | 145 °C |
| Flash point | 32 °C |
| Specific Gravity (20/20) | 0.91 |
| Refractive Index | 1.55 |
| Solubility in water | Insoluble |
| Degree of solubility in water | 0.3 g/l 25 °C |
| Solubility (miscible with) | Alcohol,Ether |
| Solubility (soluble in) | Toluene,Benzene,Acetone,Heptane |
| RTECS# | WL3675000 |
| UN Number (DOT-AIR) | UN2055 |
| Class (DOT-AIR) | 3 |
| Packing Group (TCI-A) | III |
| HS Number | 2902.50.0000 |
Styrene, 99%, stab. with 10-15ppm 4-tert-butylcatechol
Chemical Properties
Applications
Styrene is used in the preparation of polystyrene which finds application in rigid foodservice containers, automobile body panels, wind turbine parts, boats, compact disc (CD) cases, envelope windows and many other products. Other uses include refrigerator liners, medical devices and small household appliances. It is used as a precursor for the preparation of styrene-butadiene rubber, styrene-butadiene latex, styrene-isoprene-styrene (SIS), styrene-divinylbenzene (S-DVB) and styrene-acrylonitrile resin (SAN), which are used in rubber, plastic, insulation, fiberglass, pipes, automobile and boat parts, food containers and carpet backing.
Notes
GHS Hazard and Precautionary Statements
Hazard Statements: H226-H304-H315-H319-H332-H335-H336-H351-H361d-H372
Flammable liquid and vapour. May be fatal if swallowed and enters airways. Causes skin irritation. Causes serious eye irritation. Harmful if inhaled. May cause respiratory irritation. May cause drowsiness or dizziness. Suspected of causing cancer. Suspected of damaging the unborn child. Causes damage to organs through prolonged or repeated exposure.
Precautionary Statements: 86698-P201-P202-P210-P233-P235-P240-P241-P242-P243-P260-P264b-P270-P271-P280i-P281-P301+P310-P303+P361+P353-P304+P340-P305+P351+P338-P308+P313-P331-P332+P313-P363-P370+P378q-P
Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Keep away from heat/sparks/open flames/hot surfaces. – No smoking. Keep container tightly closed. Keep cool. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear eye/face protection. Use personal protective equipment as required. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF exposed or concerned: Get medical advice/attention. Do NOT induce vomiting. If skin irritation occurs: Wash contaminated clothing before reuse. In case of fire: Use CO2, dry chemical, or foam.
Other References
Appearance (Color): Clear colorless
Form: Liquid
Assay (GC): ≥98.5%
Identification (FTIR): Conforms
Refractive Index: 1.5450-1.5480 @ 20°C
Solution Test: 10% in diethyl ether: clear
Solution Test: 10% in methanol: clear
