Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 202-851-5 | CAS number: 100-42-5
Substance identity
Identification
- Display Name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Type of Substance
- Composition:
- mono-constituent substance
- Origin:
- organic
Substance Identifiers open all close all
Compositions
Boundary Composition(s) open all close all
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Legal Entity Composition(s) open all close all
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity
| Impurity |
- State Form:
- liquid
- Degree of purity:
- >= 99 - <= 100 % (w/w)
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity 1
- Reference substance name:
- Ethylbenzene
- EC Number:
- 202-849-4
- EC Name:
- Ethylbenzene
- CAS Number:
- 100-41-4
- Molecular formula:
- C8H10
- IUPAC Name:
- ethylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- other: Liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- solid: bulk
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- other: The monomer is a liquid though the substance is imported as a polymer which is a solid; bulk
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity
| Impurity |
- State Form:
- liquid
- Degree of purity:
- 99.04 % (w/w)
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity 1
- Reference substance name:
- Ethylbenzene
- EC Number:
- 202-849-4
- EC Name:
- Ethylbenzene
- CAS Number:
- 100-41-4
- Molecular formula:
- C8H10
- IUPAC Name:
- ethylbenzene
Impurity 2
- Reference substance name:
- m-xylene
- EC Number:
- 203-576-3
- EC Name:
- m-xylene
- CAS Number:
- 108-38-3
- Molecular formula:
- C8H10
- IUPAC Name:
- m-xylene
Impurity 3
- Reference substance name:
- Cumene
- EC Number:
- 202-704-5
- EC Name:
- Cumene
- CAS Number:
- 98-82-8
- Molecular formula:
- C9H12
- IUPAC Name:
- isopropylbenzene
Impurity 4
- Reference substance name:
- p-xylene
- EC Number:
- 203-396-5
- EC Name:
- p-xylene
- CAS Number:
- 106-42-3
- Molecular formula:
- C8H10
- IUPAC Name:
- p-xylene
Impurity 5
- Reference substance name:
- Propylbenzene
- EC Number:
- 203-132-9
- EC Name:
- Propylbenzene
- CAS Number:
- 103-65-1
- Molecular formula:
- C9H12
- IUPAC Name:
- propylbenzene
Impurity 6
- Reference substance name:
- 2-ethyltoluene
- EC Number:
- 210-255-1
- EC Name:
- 2-ethyltoluene
- CAS Number:
- 611-14-3
- Molecular formula:
- C9H12
- IUPAC Name:
- 1-ethyl-2-methylbenzene
Impurity 7
- Reference substance name:
- 2-phenylpropene
- EC Number:
- 202-705-0
- EC Name:
- 2-phenylpropene
- CAS Number:
- 98-83-9
- Molecular formula:
- C9H10
- IUPAC Name:
- isopropenylbenzene
Impurity 8
- Reference substance name:
- p-isopropylstyrene
- EC Number:
- 218-151-8
- EC Name:
- p-isopropylstyrene
- CAS Number:
- 2055-40-5
- Molecular formula:
- C11H14
- IUPAC Name:
- 1-isopropyl-4-vinylbenzene
Impurity 9
- Reference substance name:
- Benzaldehyde
- EC Number:
- 202-860-4
- EC Name:
- Benzaldehyde
- CAS Number:
- 100-52-7
- Molecular formula:
- C7H6O
- IUPAC Name:
- Benzaldehyde
Impurity 10
- Reference substance name:
- 2-phenoxyethanol
- EC Number:
- 204-589-7
- EC Name:
- 2-phenoxyethanol
- CAS Number:
- 122-99-6
- Molecular formula:
- C8H10O2
- IUPAC Name:
- 2-phenoxyethanol
Impurity 11
- Reference substance name:
- 1-methyl-2-phenylindole
- EC Number:
- 222-618-1
- EC Name:
- 1-methyl-2-phenylindole
- CAS Number:
- 3558-24-5
- Molecular formula:
- C15H13N
- IUPAC Name:
- 1-methyl-2-phenyl-1H-indole
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- other: Momoner in imported polymer
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- other: solid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- solid: bulk
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- other: the monomer is a liquid though the substance is imported as a polymer
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- other: solid in a mixture
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity
| Impurity |
- State Form:
- liquid
- Degree of purity:
- >= 99.8 - <= 100 % (w/w)
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity 1
- Reference substance name:
- Ethylbenzene
- EC Number:
- 202-849-4
- EC Name:
- Ethylbenzene
- CAS Number:
- 100-41-4
- Molecular formula:
- C8H10
- IUPAC Name:
- ethylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- other: Polymer when importing in EU
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
- State Form:
- liquid
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity
| Impurity |
- State Form:
- liquid
- Degree of purity:
- >= 99.7 - <= 100 % (w/w)
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity 1
- Reference substance name:
- Ethylbenzene
- EC Number:
- 202-849-4
- EC Name:
- Ethylbenzene
- CAS Number:
- 100-41-4
- Molecular formula:
- C8H10
- IUPAC Name:
- ethylbenzene
Impurity
| Impurity |
- Degree of purity:
- >= 99 - <= 100 % (w/w)
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity 1
- Reference substance name:
- Ethylbenzene
- EC Number:
- 202-849-4
- EC Name:
- Ethylbenzene
- CAS Number:
- 100-41-4
- Molecular formula:
- C8H10
- IUPAC Name:
- ethylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity
Additive
| Impurity |
| Additive |
- Degree of purity:
- > 98 - <= 99.9 % (w/w)
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity 1
- Reference substance name:
- Phenylacetylene
- EC Number:
- 208-645-1
- EC Name:
- Phenylacetylene
- CAS Number:
- 536-74-3
- Molecular formula:
- C8H6
- IUPAC Name:
- divinylbenzene
Impurity 2
- Reference substance name:
- Divinylbenzene
- EC Number:
- 215-325-5
- EC Name:
- Divinylbenzene
- CAS Number:
- 1321-74-0
- Molecular formula:
- C10H10
Impurity 3
- Reference substance name:
- Benzaldehyde
- EC Number:
- 202-860-4
- EC Name:
- Benzaldehyde
- CAS Number:
- 100-52-7
- Molecular formula:
- C7H6O
- IUPAC Name:
- Benzaldehyde
Impurity 4
- Reference substance name:
- Oxygen
- EC Number:
- 231-956-9
- EC Name:
- Oxygen
- CAS Number:
- 7782-44-7
- Molecular formula:
- O2
- IUPAC Name:
- dioxygen.
Additive 1
- Reference substance name:
- 4-tert-butylpyrocatechol
- EC Number:
- 202-653-9
- EC Name:
- 4-tert-butylpyrocatechol
- CAS Number:
- 98-29-3
- Molecular formula:
- C10H14O2
- IUPAC Name:
- 4-tert-butylbenzene-1,2-diol.
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity
| Impurity |
- Degree of purity:
- >= 80 - <= 100 % (w/w)
Constituent 1
- Reference substance name:
- Styrene
- EC Number:
- 202-851-5
- EC Name:
- Styrene
- CAS Number:
- 100-42-5
- Molecular formula:
- C8H8
- IUPAC Name:
- ethenylbenzene
Impurity 1
- Reference substance name:
- Ethylbenzene
- EC Number:
- 202-849-4
- EC Name:
- Ethylbenzene
- CAS Number:
- 100-41-4
- Molecular formula:
- C8H10
- IUPAC Name:
- ethylbenzene
Composition(s) generated upon use
Other types of composition(s)
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
