Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)
Styrene
Description Top
| CAS number | 100-42-5 |
| UN number | 2055 |
| Chemical formula | C8H8 |
| Accident occurred | Yes |
| Standard European Behaviour Classification (SEBC) | Floater that evaporates (FE) |
| Notable risks | Polymerization. |
GESAMP Hazard profile
| A1 | A2 | B1 | B2 | C1 | C2 | C3 | D1 | D2 | D3 | E1 | E2 | E3 |
| 3 | R | 3 | NI | 1 | 0 | 2 | 2 | 2 | CM | NI | FE | 3 |
Marine pollution Classification (MARPOL Annex II)
| Category | Description |
| Y | Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a hazard to either marine resources or human health or cause harm to amenities or other legitimate uses of the sea and therefore justify a limitation on the quality and quantity of the discharge into the marine environment. |
Alternate names for this chemical
Cinnamene
Ethenylbenzene
Phenylethene
Phenethylene
Phenylethylene
Styrene Monomer
Styrol
Styrolene
Vinylbenzene
Vinylbenzol
Vinyl Benzene
Styrene
Ethenylbenzene
Phenylethene
Phenethylene
Phenylethylene
Styrene Monomer
Styrol
Styrolene
Vinylbenzene
Vinylbenzol
Vinyl Benzene
Styrene
Physico-chemical properties Top
| Chemical formula | C8H8 | ||
| Molar mass | 104.15 [g/mol] | ||
| State | Liquid at 25°C and 1 atm | ||
| Fusion temperature | -30.6 [°C] | ||
| Boiling temperature | 145.2 [°C] | ||
| Density |
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| Surface tension |
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| Interfacial tension |
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| Kinematic viscosity |
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| Hydrosolubility |
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| Vapour pressure |
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| Vapour density | 3.1 | ||
| Flash point (Pensky-Martens closed cup) | 31 [°C] | ||
| Flash point (Cleveland open cup) | 34.4 [°C] | ||
| Lower explosivity limit (LEL) | 0.9 [%] | ||
| Upper explosivity limit (UEL) | 6.8 [%] | ||
| Vaporization enthalpy |
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| Combustion enthalpy | 40500000 [J/Kg] | ||
| Specific heat capacity | 1747.5 [J/(Kg·K)] | ||
| Combustion efficiency | 70 [%] | ||
| Mass flow rate of the combustion surface | 0.07 [Kg/(m²·s)] | ||
| Radiative fraction | 60 [%] | ||
| Henry's constant | 278 [mol/(m³·Pa)] |
Behaviour Top
| Log Kow | 3.02 |
| Log Koc | 2.96 |
| Hydrolysis (Half-life) | Not hydrolysable |
| Aqueous photolysis (Half-life) | Not photolysable |
| Biodegradation in estuary environment (Half-life) | 15 days |
| Biodegradation in marine environment (Half-life) | 50 days |
| Standard European Behaviour Classification (SEBC) | Floater that evaporates (FE) |
| Bioconcentration factor (BCF) | 74 |
Ecotoxicity Top
| Lowest median lethal concentration (LC50) on algae | 4.9 [mg/l] | ||
| Lowest median lethal concentration (LC50) on crustacean | 4.7 [mg/l] | ||
| Lowest median lethal concentration (LC50) on fishes | 4.02 [mg/l] | ||
| Highest no observed effect concentration (NOEC) on crustacean | 1.01 [mg/l] | ||
| Assessment factor (AF) |
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| Predicted No Effect Concentration (PNEC) |
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Hazards Top
Danger
| IDLH | 700 [ppm] |
Hazards statements
Health
H317
May cause an allergic skin reaction.
Environmental
H400
Very toxic to aquatic life.
H410
Very toxic to aquatic life with long lasting effects.
Precautionary statements
Prevention
P261
Avoid breathing dust/fume/gas/mist/vapours/spray.
P272
Contaminated work clothing should not be allowed out of the workplace.
P273
Avoid release to the environment.
P280
Wear protective gloves/protective clothing/eye protection/face protection.
Response
P321
Specific treatment (see ... on this label).
P363
Wash contaminated clothing before reuse.
P391
Collect spillage.
P333 + P313
If skin irritation or rash occurs: Get medical advice/attention.
Disposal
P501
Dispose of contents/container to ...
GESAMP Top
GESAMP Hazard profile
| A1 | A2 | B1 | B2 | C1 | C2 | C3 | D1 | D2 | D3 | E1 | E2 | E3 |
| 3 | R | 3 | NI | 1 | 0 | 2 | 2 | 2 | CM | NI | FE | 3 |
A1: Bioaccumulation
| Rating | Description |
| 3 | Moderate potential to bioaccumulate |
A1a:
| Rating | Description | Criteria [mg/l] |
| 3 | Moderate potential to bioaccumulate | 3 ≤ Log Kow < 4 |
A1b:
| Rating | Description | Criteria |
| 2 | Low potential to bioaccumulate | 10 ≤ BCF < 100 |
A2: Biodegradation
| Rating | Description |
| R | Readily biodegradable |
B1: Acute aquatic toxicity
| Rating | Description | Criteria [mg/l] |
| 3 | Moderately toxic | 1 < LC/EC/IC50 ≤ 10 |
B2: Chronic aquatic toxicity
| Rating | Description |
| NI | No Information |
C1: Acute oral toxicity
| Rating | Description | Criteria [mg/Kg] |
| 1 | Slight | 300 < AOTE ≤ 2000 |
C2: Acute dermal toxicity (skin contact)
| Rating | Description | Criteria [mg/Kg] |
| 0 | Negligible | ADTE > 2000 |
C3: Acute inhalation toxicity
| Rating | Description | Criteria [mg/l] (4 hours exposure) |
| 2 | Moderate | 2 < AITE ≤ 10 |
D1: Skin irritation or corrosion
| Rating | Description | Sign | GHS category |
| 2 | Irritating | Marked erythema, Obvio | Irritant Category 2 |
D2: Eye irritation
| Rating | Description | Sign | GHS category |
| 2 | Irritating | Marked conjunctival hy | Irritant Category 2A |
D3: Long-term health effects
| Notation | Hazard endpoint | Description | GHS category |
| C | Carcinogenicity | Chemicals which have been shown to induce or increase the incidence of cancer | Category 1 for Carcinogens |
| M | Mutagenicity | Cause a permanent change in the amount or structure of genetic material in cells | Categories 1 and 2 for Germ Cell Mutagens |
E1: Tainting of seafood
| Rating | Description |
| NI | No Information |
E2: Behaviour of chemicals in the marine environment
| Rating | Description |
| FE | Floater that evaporates |
E3: Interference with the use of coastal amenities
| Rating | Interference | Description | Interpretation | Warning |
| 3 | Highly objectionable | 1 is highly acutely toxic; and/or 2 is severely irritant or corrosive to skin or eyes; and/or 3 is carcinogenic, mutagenic or reprotoxic; and/or 4 is a floater or persistent floater with associated health effects | 1 C1 and/or C2 and/or C3 = 4; and/or 2 D1 or D2 = 3, 3A, 3B, or 3C; and/or 3 D3 contains C, M or R; and/or 4 E2 = F or Fp and D3 contains Ss, Sr, T, A, N, or I | Warning issued leading to the closure of amenities |
GHS Security Information
Danger
About the project
HNS-MS is a decision-support tool that Belgian and French maritime authorities as well as coastguard stations can activate in order to forecast the drift, fate and behavior of acute marine pollution by Harmful Noxious Substances (HNS) accidentally released in the marine system.
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Copyright © 2015–2024 HNS-MS Consortium
HNS-MS has been funded by DG-ECHO under agreement ECHO/SUB/2014/693705 and runs from 1 January 2015 to 31 March 2017.