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Uses Ethylbenzene Production Health Effects
Ethylbenzene structure
Chemical Name:
EB;ET2O;ETHER;NSC 406903;NCI-C56393;Ethylenzee;ethylenzene;ETHYL OXIDE;Ethylbenzol;Etilbenzene
Molecular Formula:
Formula Weight:
MOL File:

Ethylbenzene Properties

Melting point:
−95 °C(lit.)
Boiling point:
136 °C(lit.)
0.867 g/mL at 25 °C(lit.)
vapor density 
3.7 (vs air)
vapor pressure 
28.69 psi ( 55 °C)
refractive index 
n20/D 1.495(lit.)
Flash point:
72 °F
storage temp. 
Relative polarity
explosive limit
Water Solubility 
0.0206 g/100 mL
Exposure limits
TLV-TWA 100 ppm (~433 mg/m3) (ACGIH, NIOSH, MSHA, and OSHA); STEL 125 ppm (541 mg/m3) (ACGIH); IDLH 2000 ppm (NIOSH).
Stable. Incompatible with oxidizing agents. Flammable.
CAS DataBase Reference
100-41-4(CAS DataBase Reference)
NIST Chemistry Reference
EPA Substance Registry System
Benzene, ethyl-(100-41-4)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  F+,Xn,Xi,F,T
Risk Statements  63-11-20/22-36/38-40-48/20-65-20-48/20/22-38-22-39/23/24/25-23/24/25-2017/11/20
Safety Statements  9-16-29-33-24/25-36/37-36-45-36/37/39-26-23-53-7-24-62
RIDADR  UN 1175 3/PG 2
WGK Germany  1
RTECS  KI5775000
Autoignition Temperature 810 °F
HS Code  2902 60 00
HazardClass  3
PackingGroup  II
Hazardous Substances Data 100-41-4(Hazardous Substances Data)
Toxicity LD50 orally in rats: 5.46 g/kg (Smyth)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H304 May be fatal if swallowed and enters airways Aspiration hazard Category 1 Danger
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H320 Causes eye irritation Serious eye damage/eye irritation Category 2B Warning P264, P305+P351+P338,P337+P313
H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
H360 May damage fertility or the unborn child Reproductive toxicity Category 1A, 1B Danger
H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
H371 May cause damage to organs Specific target organ toxicity, single exposure Category 2 Warning P260, P264, P270, P309+P311, P405,P501
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and understood.
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P331 Do NOT induce vomiting.
P391 Collect spillage. Hazardous to the aquatic environment
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P403+P235 Store in a well-ventilated place. Keep cool.

NFPA 704

Diamond Hazard Value Description
2 0
Health   2 Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, iodine)
Flammability   3 Liquids and solids (including finely divided suspended solids) that can be ignited under almost all ambient temperature conditions . Liquids having a flash point below 22.8 °C (73 °F) and having a boiling point at or above 37.8 °C (100 °F) or having a flash point between 22.8 and 37.8 °C (73 and 100 °F). (e.g. gasoline, acetone)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)

(NFPA, 2010)

Ethylbenzene price More Price(44)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 03079 Ethylbenzene analytical standard 100-41-4 10ml $86.5 2018-11-13 Buy
Sigma-Aldrich 03079 Ethylbenzene analytical standard 100-41-4 5ml $52.5 2018-11-13 Buy
TCI Chemical E0064 Ethylbenzene >99.0%(GC) 100-41-4 25mL $15 2018-11-22 Buy
TCI Chemical E0064 Ethylbenzene >99.0%(GC) 100-41-4 500mL $23 2018-11-22 Buy
Alfa Aesar L05908 Ethylbenzene, 99% 100-41-4 100ml $24.8 2018-11-15 Buy

Ethylbenzene Chemical Properties,Uses,Production


Ethylbenzene is used primarily to make styrene monomer (SM) [1]counting greater than 99%. At less than 1%, it is used as a solvent[2], in fuels[3], or as a starting material[4] to make other chemicals.

[1] Ethylbenzene is mainly used in the manufacture of styrene, which is the raw material of producing styrene-based polymers that are widely used in products such as packaging, kitchen utensils and electronic equipment housing.2
[2] Solvents in a variety of Industries
Which industries How it is used
Machinery Mfg. and Repair Solvents
Rubber Manufacture Solvents
Paint Manufacture Hydrocarbon Solvents
Wood Stains and Varnishes Varnish Solvent
Paper Coating Solvents
Electroplating Vapors Degreasing Solvents

[3] Ethyl benzene (C6H5C2H5) is the smallest aromatic hydrocarbon molecule with C C key chain structure, and the C C single bond adjacent to benzene ring is far more weaker than those of other chemical bonds thus it is the most easily broken key. It is the characteristic structure of single chain alternative fuels such as n-propylbenzene n-butylbenzene in diesel oil and aviation kerosene.
[4] Ethylbenzene may be used as a starting material to synthesize: (1) Acetophenone via selection oxidation in the presence of potassium dichromate supported on neutral alumina and using air as the oxidizing agent. (2) Styrene via dehydrogenation over nanodiamonds in an oxygen-lean environment.

Ethylbenzene Production

Ethylbenzene is currently used on a large scale industrially for the production of styrene monomer. Ethylbenzene may be produced by a number of chemical processes but one process which has achieved a significant degree of commercial success is the alkylation of benzene with ethylene in the presence of a solid, acidic zeolite catalyst.
A preferred catalyst includes the synthetic zeolite identified in this specification as MCM-22.In the production of ethylbenzene by this process; ethylene is used as the alkylating agent and is reacted with benzene in the presence of the catalyst at certain temperatures.
Production of ethylbenzene involves the liquid-phase reaction of ethylene with benzene
C2H4 + C6H6 C8H10
Undesirable reaction occurred by the formation of Di-ethyl benzene from reaction of ethylbenzene with ethylene.
C8H10 + C2H4 C10H14
A third reaction also occurs, in which Di-ethyl benzene reacts with benzene to form ethylbenzene.
C10H14 + C6H6 2C8H10

Health Effects

Ethylbenzene has low acute and chronic toxicity for humans. It is toxic to the central nervous system and is an irritant of mucous membranes and the eyes. Ethylbenzene exposure might be associated with hearing loss, neurobehavioral function impairment, and imbalance of neurotransmitters, and it is an inducer of liver microsomal enzymes. The toxicity is stronger along with the rise of exposure volume, see the table below:
Exposure Volume in air Health effects
200 ppm Ethylbenzene vapor has a transient irritant effect on human eyes
1000 ppm On the first exposure it is very irritating and causes tearing, but tolerance rapidly develops.
2000 ppm Eye irritation and lacrimation are immediate and severe.
2,000-5,000 ppm Human exposures of ethylbenzene are associated with dizziness and vertigo
5000 ppm It causes intolerable irritation of the eyes and nose

CLASSIFICATION: D; not classifiable as to human carcinogenicity.
BASIS FOR CLASSIFICATION: nonclassifiable due to lack of animal bioassays and human studies.

Chemical Properties

Ethylbenzene is a colorless, flammable liquid that smells like gasoline. Less dense than water and insoluble in water. Hence floats on water. Vapors are heavier than air. It belongs to the family of Substituted Benzenes. These are aromatic compounds containing a benzene substituted at one or more positions. It is found in natural products such as coal tar and petroleum and is also found in manufactured products such as inks, insecticides, and paints. Ethylbenzene is used primarily to make another chemical, styrene. Other uses include as a solvent, in fuels, and to make other chemicals.

Chemical Properties

Ethylbenzene is a colorless liquid. Pungent aromatic odor. The Odor Threshold is 0.0920.60 ppm




Ethyl benzene is used as a solvent and as anintermediate to produce styrene monomer.


ethylbenzene: A colourless flammableliquid, C6H5C2H5; r.d. 0.867;m.p. –95°C; b.p. 136°C. It is madefrom ethene and ethybenzene by aFriedel–Crafts reaction and is usedin making phenylethene (for polystyrene).

General Description

A clear colorless liquid with an aromatic odor. Flash point 59°F. Less dense than water (at 7.2 lb / gal) and insoluble in water. Hence floats on water. Vapors heavier than air. Used as a solvent and to make other chemicals.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

Ethylenzene can react vigorously with strong oxidizing materials .


Toxic by ingestion, inhalation, and skin absorption; irritant to skin and eyes. Flammable, dangerous fire risk. Possible carcinogen.

Health Hazard

The acute toxicity of ethyl benzene is low.At high concentrations its exposure producesnarcotic effects similar to benzene andtoluene. A 4-hour exposure to a concentrationof 4000 ppm proved fatal to rats. The lethaldose varies with species. Deaths resulted fromintense congestion and edema of the lungs.
Other than the narcotic effects, ethyl benzeneexhibits irritant properties that are somewhatgreater than those of benzene or toluene.It is an irritant to the skin, eyes, and nose.Repeated contact with the liquid may causereddening of the skin and blistering. Thevapors at 200 ppm may cause mild irritationof the eyes in humans, which may becomesevere and lacrimating at 2000–3000 ppm.
The oral toxicity in animals was foundto be low to very low. An LD50 value of3500 mg/kg for rats has been documented(NIOSH 1986). No adverse effects werenoted in animals subjected to chronic inhalationexposure at below 400 ppm. At higherdosages only the liver was affected (ACGIH1986). Ethyl benzene is eliminated from thebody by metabolic excretion. The urinarymetabolites in humans are mainly mandelicacid, C6H5CH(OH)COOH, and benzoylformicacid, C6H5COCOOH.

Health Hazard

Recommended Personal Protective Equipment: Self-contained breathing apparatus; safety goggles; Symptoms Following Exposure: Inhalation may cause irritation of nose, dizziness, depression. Moderate irritation of eye with corneal injury possible. Irritates skin and may cause blisters; General Treatment for Exposure: INHALATION: remove victim to fresh air, keep him warm, and get medical help promptly; if breathing stops give artificial respiration. INGESTION: induce vomiting only upon physician's approval; material in lung may cause chemical pneumonitis. SKIN AND EYES: wash for 15 min. with water and get medical attention; remove and wash contaminating clothing before use; Toxicity by Inhalation (Threshold Limit Value): 100 ppm; Short-Term Exposure Limits: 200 ppm for 30 min.; Toxicity by Ingestion: Grade 2;LD50 = 0.5 to 5 g/kg (rat); Late Toxicity: Data not available; Vapor (Gas) Irritant Characteristics: Vapors are moderately irritating; Liquid or Solid Irritant Characteristics: Causes smarting of the skin and first-degree burns on short exposure and may cause secondary burns on long exposure; Odor Threshold: 140 ppm.

Fire Hazard

Flash Point (°F): 80 ℃; 59 ℃; Flammable Limits in Air (%): 1.0-6.7; Fire Extinguishing Agents: Foam (most effective), water fog, carbon dioxide or dry chemical; Fire Extinguishing Agents Not To Be Used: Not pertinent; Special Hazards of Combustion Products: Irritating vapors are generated when heated; Behavior in Fire: Vapor is heavier than air and may travel considerable distance to a source of ignition and flash back; Ignition Temperature (°F): 860; Electrical Hazard: Not pertinent; Burning Rate: 5.8 mm/min.

Chemical Reactivity

Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. Mildly toxic by inhalation and skin contact. An experimental teratogen. Other experimental reproductive effects. Human systemic effects by inhalation: eye, sleep, and pulmonary changes. An eye and skin irritant. Human mutation data reported. The liquid is an irritant to the skin and mucous membranes. A concentration of 0.1% of the vapor in air is an irritant to human eyes, and a concentration of 0.2% is extremely irritating at first, then causes dizziness, irritation of the nose and throat, and a sense of constriction in the chest. Exposure of guinea pigs to 1% concentration has been reported as causing ataxia, loss of consciousness, tremor of the extremities, and finally death through respiratory failure. The pathological findings were congestion of the brain and lungs with edema. A very dangerous fire and explosion hazard when exposed to heat or flame; can react vigorously with oxidizing materials. To fight fire, use foam, CO2, dry chemical. Emitted from modern budding materials (CENEAR 69,22,91). When heated to decomposition it emits acrid smoke and irritating fumes.

Potential Exposure

Ethyl benzene is used in styrene manufacture and in synthesis of p-nitroacetophenone; in the manufacture of cellulose acetate, and synthetic rubber. It is also used as a solvent or diluent; and as a component of automotive and aviation gasoline. Significant quantities of EB are present in mixed xylenes. These are used as dilatants in the paint industry, in agricultural sprays for insecticides and in gasoline blends (which may contain as much as 20% EB). In light of the large quantities of EB produced and the diversity of products in which it is found, there may exist environmental sources for ethylbenzene, e.g., vaporization during solvent use; pyrolysis of gasoline and emitted vapors at filling stations. Groups of individuals who are exposed to EB to the greatest extent and could represent potential pools for the expression of EB toxicity include: (1) individuals in commercial situations where petroleum products or by-products are manufactured e.g., rubber or plastics industry); (2) individuals residing in areas with high atmospheric smog generated by motor vehicle emissions

First aid

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.


UN1175 Ethylbenzene, Hazard Class: 3; Labels: 3-Flammable liquid


Vapors may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids,oxoacids, and epoxides. Attacks plastics and rubber. May accumulate static electrical charges, and may cause ignition of its vapors.

Waste Disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed

Ethylbenzene Preparation Products And Raw materials

Raw materials

Preparation Products

Ethylbenzene Suppliers

Global( 202)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32457 55
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 24001 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254 CHINA 20095 58
Haihang Industry Co.,Ltd
+86 531 8582 1093 CHINA 4669 58
(323) 306-3136
(626) 453-0409 United States 8409 58
+8615322315498 skype:live:91c564749a4e2c2c
+8615322315498(whatsApp) CHINA 141 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40277 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30168 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 / 800-988-0390
021-67121385 China 24560 81

View Lastest Price from Ethylbenzene manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-09-20 EB
US $120.00-900.00 / kg 10kg 99.8% 500kg/month Hebei Huanhao Biotechnology Co., Ltd.
2018-09-12 EB

Ethylbenzene Spectrum

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