Styrene oxide

Modify Date: 2026-06-29 18:52:30

Styrene oxide Structure
Styrene oxide structure
 Common Name Styrene oxide
CAS Number 96-09-3 Molecular Weight 120.14900
Density 1.05 Boiling Point 194ºC
Molecular Formula C8H8O Melting Point -37ºC
MSDS Chinese USA Flash Point 74ºC
Symbol GHS06 GHS08
GHS06, GHS08		 Signal Word Danger

Summary: Styrene oxide (CAS number: 96-09-3), with molecular formula C8H8O and molecular weight 120.14900, appears as a colorless to light yellow liquid, with a melting point of -37°C and boiling point of 194°C. For research-use only, not for medical or clinical usage.

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name styrene oxide
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.05
Boiling Point 194ºC
Melting Point -37ºC
Molecular Formula C8H8O
Molecular Weight 120.14900
Flash Point 74ºC
Exact Mass 120.05800
PSA 12.53000
LogP 1.75790
Vapour density 4.14 (vs air)
Vapour Pressure <1 mm Hg ( 20 °C)
Index of Refraction 1.533-1.536
InChIKey AWMVMTVKBNGEAK-UHFFFAOYSA-N
SMILES c1ccc(C2CO2)cc1
Storage condition 0-6°C
Stability Stability Unstable - polymerises readily with compounds possessing a labile hydrogen (such as acids and alcohols) in the presence of acids, bases or some salts. Combustible. Incompatible with strong oxidizing agents, acids, bases. Moisture sensitive.
Water Solubility 3 g/L (20 ºC)

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
CZ9625000
CHEMICAL NAME :
Benzene, (epoxyethyl)-
CAS REGISTRY NUMBER :
96-09-3
BEILSTEIN REFERENCE NO. :
0108582
LAST UPDATED :
199806
DATA ITEMS CITED :
77
MOLECULAR FORMULA :
C8-H8-O
MOLECULAR WEIGHT :
120.16
WISWESSER LINE NOTATION :
T3OTJ BR

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
2 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
500 ppm/4H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
460 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
890 uL/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
2 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
8400 mg/kg/7W-I
TOXIC EFFECTS :
Liver - other changes Biochemical - Metabolism (Intermediary) - lipids including transport
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
350 mg/kg/14D-I
TOXIC EFFECTS :
Brain and Coverings - other degenerative changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - monoamine oxidase Biochemical - Neurotransmitters or modulators (putative) - catecholamine levels in CNS
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
65 gm/kg/52-I
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Lungs, Thorax, or Respiration - tumors
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
10 gm/kg/52W-I
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors Liver - tumors
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
273 gm/kg/2Y-C
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
74 gm/kg/62W-I
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Skin and Appendages - tumors Tumorigenic - tumors at site of application
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
96 mg/kg
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Blood - lymphoma, including Hodgkin's disease
TYPE OF TEST :
TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
52 gm/kg/52W-I
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors Liver - tumors
TYPE OF TEST :
TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
200 gm/kg/2Y-C
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
DOSE :
100 ppm/7H
SEX/DURATION :
female 1-19 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants) Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
DOSE :
100 ppm/7H
SEX/DURATION :
female 1-19 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - pre-implantation mortality (e.g. reduction in number of implants per female; total number of implants per corpora lutea) Reproductive - Specific Developmental Abnormalities - musculoskeletal system
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
DOSE :
100 ppm/7H
SEX/DURATION :
female 1-19 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - other measures of fertility Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
DOSE :
15 ppm/7H
SEX/DURATION :
female 1-24 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)
TYPE OF TEST :
DNA damage
TYPE OF TEST :
Sister chromatid exchange
TYPE OF TEST :
Cytogenetic analysis
TYPE OF TEST :
Sister chromatid exchange

MUTATION DATA

TYPE OF TEST :
Mutation in mammalian somatic cells
TEST SYSTEM :
Rodent - hamster Lung
DOSE/DURATION :
2080 umol/L/2H
REFERENCE :
CBINA8 Chemico-Biological Interactions. (Elsevier Scientific Pub. Ireland Ltd., POB 85, Limerick, Ireland) V.1- 1969- Volume(issue)/page/year: 39,57,1982 *** REVIEWS *** IARC Cancer Review:Animal Sufficient Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 36,245,1985 IARC Cancer Review:Animal Sufficient Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 60,321,1994 IARC Cancer Review:Human No Adequate Data IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 36,245,1985 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 60,321,1994 IARC Cancer Review:Group 2A IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 60,321,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-FRANCE;Carcinogen JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 84819 No. of Facilities: 59 (estimated) No. of Industries: 2 No. of Occupations: 5 No. of Employees: 1740 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 84819 No. of Facilities: 109 (estimated) No. of Industries: 2 No. of Occupations: 4 No. of Employees: 458 (estimated)

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS06 GHS08
GHS06, GHS08
Signal Word Danger
Hazard Statements H312-H315-H317-H319-H331-H340-H350
Precautionary Statements P201-P261-P280-P305 + P351 + P338-P311
Personal Protective Equipment Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes T:Toxic;
Risk Phrases R21;R36;R45
Safety Phrases S45-S53
RIDADR UN 2810
WGK Germany 3
RTECS CZ9625000
Packaging Group III
Hazard Class 6.1
HS Code 29109000

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2910900090
Summary 2910900090. epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring, and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

 Articles34

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Design of Zeolitic Imidazolate Framework Derived Nitrogen-Doped Nanoporous Carbons Containing Metal Species for Carbon Dioxide Fixation Reactions.

ChemSusChem 8 , 3905-12, (2015)

Various N-doped nanoporous carbons containing metal species were prepared by direct thermal conversion of zeolitic imidazolate frameworks (ZIFs; ZIF-7, -8, -9, and -67) at different temperatures (600,...

Structure-activity relationships of a novel pyranopyridine series of Gram-negative bacterial efflux pump inhibitors.

Bioorg. Med. Chem. 23(9) , 2024-34, (2015)

Recently we described a novel pyranopyridine inhibitor (MBX2319) of RND-type efflux pumps of the Enterobacteriaceae. MBX2319 (3,3-dimethyl-5-cyano-8-morpholino-6-(phenethylthio)-3,4-dihydro-1H-pyrano[...

Cloning and characterization of an epoxide hydrolase from Cupriavidus metallidurans-CH34.

Protein Expr. Purif. 79(1) , 49-59, (2011)

A putative epoxide hydrolase-encoding gene was identified from the genome sequence of Cupriavidus metallidurans CH34. The gene was cloned and overexpressed in Escherichia coli with His(6)-tag at its N...

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

Phenyloxirane
epoxyethylbenzene
2-phenyl-oxirane
Styryl oxide
Oxirane,phenyl
EINECS 202-476-7
Styrene oxide
MFCD00005121
Phenylethylene oxide
Epoxystyrene
(R)-phenylethylene oxide
2-phenyloxirane
Styrene-7,8-oxide
1,2-Epoxyethylbenzene

 Styrene oxide | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the English name of styrene oxide?
A: The English name of styrene oxide is styrene oxide.
Q: What English synonyms does styrene oxide have?
A: English synonyms of styrene oxide: Phenyloxirane, epoxyethylbenzene, 2-phenyl-oxirane, Styryl oxide, Oxirane,phenyl, EINECS 202-476-7, Styrene oxide, MFCD00005121, Phenylethylene oxide, Epoxystyrene, (R)-phenylethylene oxide, 2-phenyloxirane, Styrene-7,8-oxide, 1,2-Epoxyethylbenzene.
Q: What is the melting point of styrene oxide?
A: Melting point of styrene oxide is -37ºC.
Q: What is the LogP of styrene oxide?
A: LogP of styrene oxide is 1.75790.
Q: What is the SMILES notation of styrene oxide?
A: SMILES notation of styrene oxide is c1ccc(C2CO2)cc1.
Q: What is the molecular formula of styrene oxide?
A: Molecular formula of styrene oxide is C8H8O.
Q: What is the molecular weight of styrene oxide?
A: Molecular weight of styrene oxide is 120.14900.
Q: What are the storage conditions for styrene oxide?
A: Storage conditions for styrene oxide: 0-6°C.
Q: What are the downstream products of styrene oxide?
A: Related downstream products(CAS) of styrene oxide: 110339-51-0;55848-60-7;105256-36-8;111042-49-0;4393-06-0;6006-81-1;3558-60-9;100-41-4;60-12-8;4432-34-2.
Q: What is the polar surface area (PSA) of styrene oxide?
A: Polar surface area (PSA) of styrene oxide is 12.53000.

 Styrene oxidefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
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