Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)
Xylene (Mixed Isomers)
Description Top
| CAS number | 1330-20-7 |
| UN number | 1307 |
| Chemical formula | C8H10 |
| Accident occurred | Yes |
| Standard European Behaviour Classification (SEBC) | Floater that evaporates (FE) |
| Notable risks | Reacts with oxidizers Reacts with other compounds. |
GESAMP Hazard profile
| A1 | A2 | B1 | B2 | C1 | C2 | C3 | D1 | D2 | D3 | E1 | E2 | E3 |
| 3 | NR | 3 | 0 | 0 | 0 | 0 | 2 | 2 | T | FE | 2 |
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
Dimethylbenzene
Methyltoluene
Xylol
Xylene
Xylene, Mixed Isomers
Xylenes (Mixed)
Total Xylenes
Xylenes, Total
Mixed Xylene
Xylene (Mixed Isomers)
Xylenes (Mixture)
Methyltoluene
Xylol
Xylene
Xylene, Mixed Isomers
Xylenes (Mixed)
Total Xylenes
Xylenes, Total
Mixed Xylene
Xylene (Mixed Isomers)
Xylenes (Mixture)
Physico-chemical properties Top
| Chemical formula | C8H10 | ||||
| Molar mass | 106.16 [g/mol] | ||||
| State | Liquid at 25°C and 1 atm | ||||
| Fusion temperature | -19.97 [°C] | ||||
| Boiling temperature | 140 [°C] | ||||
| Critical temperature | 619.9 [°C] | ||||
| Density |
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| Surface tension |
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| Kinematic viscosity |
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| Hydrosolubility |
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| Vapour pressure |
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| Critical pressure | 3540000 [Pa] | ||||
| Vapour density | 3.7 | ||||
| Flash point (Pensky-Martens closed cup) | 25 [°C] | ||||
| Flash point (Cleveland open cup) | 25 [°C] | ||||
| Lower explosivity limit (LEL) | 1 [%] | ||||
| Upper explosivity limit (UEL) | 7 [%] | ||||
| Vaporization enthalpy |
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| Combustion enthalpy | 40831000 [J/Kg] | ||||
| Henry's constant | 7 [mol/(m³·Pa)] |
Behaviour Top
| Log Kow | 3.12 |
| Log Koc | 2.58 |
| Hydrolysis (Half-life) | Not hydrolysable |
| Aqueous photolysis (Half-life) | Not photolysable |
| Biodegradation in estuary environment (Half-life) | 150 days |
| Biodegradation in marine environment (Half-life) | Not biodegradable |
| Standard European Behaviour Classification (SEBC) | Floater that evaporates (FE) |
| Bioconcentration factor (BCF) | 15 |
Ecotoxicity Top
| Lowest median lethal concentration (LC50) on algae | 3.2 [mg/l] | ||
| Lowest median lethal concentration (LC50) on crustacean | 1.3 [mg/l] | ||
| Lowest median lethal concentration (LC50) on fishes | 2.6 [mg/l] | ||
| Highest no observed effect concentration (NOEC) on algae | 0.7 [mg/l] | ||
| Highest no observed effect concentration (NOEC) on crustacean | 1.2 [mg/l] | ||
| Highest no observed effect concentration (NOEC) on fishes | > 1.3 [mg/l] | ||
| Assessment factor (AF) |
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| Predicted No Effect Concentration (PNEC) |
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Hazards Top
Warning
| IDLH | 900 [ppm] |
Hazards statements
Physical
H226
Flammable liquid and vapour.
Health
H312
Harmful in contact with skin.
H315
Causes skin irritation.
H332
Harmful if inhaled.
Precautionary statements
Prevention
P210
Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P243
Take precautionary measures against static discharge.
P260
Do not breathe dust/fume/gas/mist/vapours/spray.
P280
Wear protective gloves/protective clothing/eye protection/face protection.
Response
P303 + P361 + P353
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P332 + P313
If skin irritation occurs: Get medical advice/attention.
GESAMP Top
GESAMP Hazard profile
| A1 | A2 | B1 | B2 | C1 | C2 | C3 | D1 | D2 | D3 | E1 | E2 | E3 |
| 3 | NR | 3 | 0 | 0 | 0 | 0 | 2 | 2 | T | FE | 2 |
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 |
| NI | No Information |
A2: Biodegradation
| Rating | Description |
| NR | Not 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 | Criteria [mg/l] |
| 0 | Negligible | NOEC > 1 |
C1: Acute oral toxicity
| Rating | Description | Criteria [mg/Kg] |
| 0 | Negligible | 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) |
| 0 | Negligible | AITE > 20 |
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 |
| No Information |
E1: Tainting of seafood
| Rating | Description |
| T | Substances are considered to cause tainting if a statistically significant off-flavour or smell can be detected following exposure of the fish for 24h to 1mg/l or less. |
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 |
| 2 | Moderately objectionable | 1 is a persistent floater; and/or 2 is moderately acutely toxic; and/or 3 is irritating to skin and/or eyes; and/or 4 has long-term health effects other than carcinogenicity, mutagenicity or reprotoxicity; and/or 5 is highly flammable; and/or 6 is moderately flammable and is a floater with evaporative properties | 1 E2 = Fp; and/or 2 C1 and/or C2 and/or C3 = 23; and/or 3 D1 and/or D2 = 2; and/or 4 D3 contains Ss, Sr, T, A, N, or I; and/or 5 Flashpoint <23°C; and/or 6 Flashpoint 23°C to 60°C and E2 = FE or FED | Warning issued and possible closure of amenities |
GHS Security Information
Warning
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.