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Styrene(CAS#100-42-5)

Chemical Property:

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

Product Detail

Product Tags

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.

 

Introduction

Styrene, is a colorless liquid with a special aromatic odor. The following is an introduction to the properties, uses, preparation methods and safety information of styrene:

 

Quality:

1. Lighter density.

2. It is volatile at room temperature and has a low flash point and explosion limit.

3. It is miscible with a variety of organic solvents and is an extremely important organic substance.

 

Use:

1. Styrene is an important chemical raw material, often used in the synthesis of a large number of plastics, synthetic rubber and fibers.

2. Styrene can be used to make synthetic materials such as polystyrene (PS), polystyrene rubber (SBR) and acrylonitrile-styrene copolymer.

3. It can also be used to manufacture chemical products such as flavors and lubricating oils.

 

Method:

1. Styrene can be obtained by dehydrogenation by heating and pressurizing ethylene molecules.

2. Styrene and hydrogen can also be obtained by heating and cracking ethylbenzene.

 

Safety Information:

1. Styrene is flammable and should be protected from ignition and high temperatures.

2. Contact with the skin may cause irritation and allergic reactions, and appropriate precautions should be taken.

3. Long-term or substantial exposure may have adverse health effects, including damage to the central nervous system, liver, and kidneys.

4. Pay attention to the ventilation environment when using, and avoid inhalation or intake.

5. Waste disposal should comply with relevant laws and regulations, and should not be dumped or discharged at will.


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