Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)
Toluene Diisocyanate
Description Top
| CAS number | 584-84-9 |
| UN number | 2078 |
| Chemical formula | C9H6N2O2 |
| Standard European Behaviour Classification (SEBC) | Sinker (S) |
| Abilities | Reacts with water. |
GESAMP Hazard profile
| A1 | A2 | B1 | B2 | C1 | C2 | C3 | D1 | D2 | D3 | E1 | E2 | E3 |
| 1 | NR | 2 | NI | 0 | 0 | 4 | 3 | 3 | CSsSr | NI | S | 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
Toluene-2,4-Diisocyanate
2,4-Diisocyanate-1-Methylbenzene
Toluene Diisocyanate
Diisocyanate De Toluene
2,4-Diisocyanate-1-Methylbenzene
Toluene Diisocyanate
Diisocyanate De Toluene
Physico-chemical properties Top
| Chemical formula | C9H6N2O2 | ||
| Molar mass | 174.156 [g/mol] | ||
| State | Liquid at 25°C and 1 atm | ||
| Fusion temperature | 20.5 [°C] | ||
| Boiling temperature | 251 [°C] | ||
| Density |
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| Surface tension |
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| Hydrosolubility |
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| Vapour pressure |
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| Vapour density | 6 | ||
| Flash point (Pensky-Martens closed cup) | 127 [°C] | ||
| Flash point (Cleveland open cup) | 132 [°C] | ||
| Lower explosivity limit (LEL) | 0.9 [%] | ||
| Upper explosivity limit (UEL) | 9.5 [%] | ||
| Combustion enthalpy | 23900000 [J/Kg] | ||
| Specific heat capacity | 1653 [J/(Kg·K)] | ||
| Henry's constant | 1.11 [mol/(m³·Pa)] |
Behaviour Top
| Log Kow | 3.74 |
| Log Koc | 3.87 |
| Hydrolysis (Half-life) | 1 day |
| Aqueous photolysis (Half-life) | Not photolysable |
| Standard European Behaviour Classification (SEBC) | Sinker (S) |
Ecotoxicity Top
| Lowest median lethal concentration (LC50) on fishes | 164 [mg/l] |
| Highest no observed effect concentration (NOEC) on crustacean | 1.1 [mg/l] |
Hazards Top
Danger
Hazards statements
Health
H315
Causes skin irritation.
H317
May cause an allergic skin reaction.
H319
Causes serious eye irritation.
H330
Fatal if inhaled.
H334
May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H335
May cause respiratory irritation.
H351
Suspected of causing cancer.
Environmental
H412
Harmful to aquatic life with long lasting effects.
Precautionary statements
Prevention
P273
Avoid release to the environment.
P280
Wear protective gloves/protective clothing/eye protection/face protection.
P284
Wear respiratory protection.
Response
P308 + P313
IF exposed or concerned: Get medical advice/attention.
Storage
P403 + P233
Store in a well-ventilated place. Keep container tightly closed.
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 |
| 1 | NR | 2 | NI | 0 | 0 | 4 | 3 | 3 | CSsSr | NI | S | 3 |
A1: Bioaccumulation
| Rating | Description |
| 1 | Very low potential to bioaccumulate |
A1a:
| Rating | Description | Criteria [mg/l] |
| 3 | Moderate potential to bioaccumulate | 3 ≤ Log Kow < 4 |
A1b:
| Rating | Description | Criteria |
| 1 | Very low potential to bioaccumulate | 1 ≤ BCF < 10 |
A2: Biodegradation
| Rating | Description |
| NR | Not readily biodegradable |
B1: Acute aquatic toxicity
| Rating | Description | Criteria [mg/l] |
| 2 | Slightly toxic | 10 < LC/EC/IC50 ≤ 100 |
B2: Chronic aquatic toxicity
| Rating | Description |
| NI | No Information |
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) |
| 4 | High | AITE ≤ 0.5 |
D1: Skin irritation or corrosion
| Rating | Description | Sign | GHS category |
| 3 | Severely irritating or corrosive | Severe irritation indi | Corrosive Category 1 |
D2: Eye irritation
| Rating | Description | Sign | GHS category |
| 3 | Severely irritating or corrosive | Severe conjunctoblepha | Irritant Category 1 |
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 |
| Ss | Skin Sensitization | Cause specific skin hypersensitivity or allergy following skin contact | Category 1 for Skin Sensitizers |
| Sr | Respiratory Sensitization | Cause specific hypersensitivity of the airways, or asthma, following inhalation | Category 1 for Respiratory Sensitizers |
E1: Tainting of seafood
| Rating | Description |
| NI | No Information |
E2: Behaviour of chemicals in the marine environment
| Rating | Description |
| S | Sinker |
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 © 2015–2025 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.