Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)
Tert-Butyl Alcohol
Description Top
| CAS number | 75-65-0 |
| UN number | 1120 |
| Chemical formula | C4H10O |
| Standard European Behaviour Classification (SEBC) | Dissolves (D) |
| Abilities | Miscible in water. |
GESAMP Hazard profile
| A1 | A2 | B1 | B2 | C1 | C2 | C3 | D1 | D2 | D3 | E1 | E2 | E3 |
| 0 | NR | 1 | NI | 0 | 0 | 0 | 1 | 3 | NT | D | 3 |
Marine pollution Classification (MARPOL Annex II)
| Category | Description |
| Z | Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a minor hazard to either marine resources or human health and therefore justify less stringent restrictions on the quality and quantity of the discharge into the marine environment. |
Alternate names for this chemical
Tert-Butanol
2-Methyl-2-Propanol
2-Methylpropan-2-Ol
Trimethylcarbinol
Tert-Butyl Alcohol
Alcool Tert-Butylique
2-Methyl-2-Propanol
2-Methylpropan-2-Ol
Trimethylcarbinol
Tert-Butyl Alcohol
Alcool Tert-Butylique
Physico-chemical properties Top
| Chemical formula | C4H10O | ||
| Molar mass | 74.121 [g/mol] | ||
| Critical molar volume | 0.000275 [m³/mol] | ||
| State | Solid at 25°C and 1 atm | ||
| Fusion temperature | 25.69 [°C] | ||
| Boiling temperature | 82.4 [°C] | ||
| Critical temperature | 506.2 [°C] | ||
| Density |
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| Kinematic viscosity |
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| Hydrosolubility |
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| Vapour pressure |
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| Critical pressure | 3972000 [Pa] | ||
| Vapour density | 2.55 | ||
| Flash point (Pensky-Martens closed cup) | 11 [°C] | ||
| Lower explosivity limit (LEL) | 2.4 [%] | ||
| Upper explosivity limit (UEL) | 8 [%] | ||
| Vaporization enthalpy |
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| Specific heat capacity | 2949 [J/(Kg·K)] | ||
| Henry's constant | 0.92 [mol/(m³·Pa)] |
Behaviour Top
| Log Kow | 0.37 |
| Log Koc | 0.32 |
| Hydrolysis (Half-life) | Not hydrolysable |
| Aqueous photolysis (Half-life) | Not photolysable |
| Standard European Behaviour Classification (SEBC) | Dissolves (D) |
| Bioconcentration factor (BCF) | 5 |
Ecotoxicity Top
| Lowest median lethal concentration (LC50) on fishes | 3550 [mg/l] | |
| Highest no observed effect concentration (NOEC) on algae | 976 [mg/l] | |
| Highest no observed effect concentration (NOEC) on crustacean | 100 [mg/l] | |
| Highest no observed effect concentration (NOEC) on fishes | 332 [mg/l] | |
| Assessment factor (AF) |
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| Predicted No Effect Concentration (PNEC) |
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Hazards Top
Danger
Hazards statements
Physical
H225
Highly flammable liquid and vapour.
Health
H319
Causes serious eye irritation.
H332
Harmful if inhaled.
H335
May cause respiratory irritation.
Precautionary statements
Prevention
P210
Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P233
Keep container tightly closed.
P240
Ground/bond container and receiving equipment.
P241
Use explosion-proof electrical/ventilating/lighting/.../equipment.
P242
Use only non-sparking tools.
P243
Take precautionary measures against static discharge.
P280
Wear protective gloves/protective clothing/eye protection/face protection.
Response
P312
Call a POISON CENTER or doctor/physician if you feel unwell.
P303 + P361 + P353
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P304 + P340
IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P337 + P313
If eye irritation persists: Get medical advice/attention.
P370 + P378
In case of fire: Use ... for extinction.
Storage
P405
Store locked up.
P403 + P233
Store in a well-ventilated place. Keep container tightly closed.
P403 + P235
Store in a well-ventilated place. Keep cool.
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 |
| 0 | NR | 1 | NI | 0 | 0 | 0 | 1 | 3 | NT | D | 3 |
A1: Bioaccumulation
| Rating | Description |
| 0 | No potential to bioaccumulate |
A1a:
| Rating | Description | Criteria [mg/l] |
| 0 | No potential to bioaccumulate | Log Kow < 1 |
A1b:
| Rating | Description | Criteria |
| 0 | No potential to bioaccumulate | No measurable bioconcentration factor (BCF) |
A2: Biodegradation
| Rating | Description |
| NR | Not readily biodegradable |
B1: Acute aquatic toxicity
| Rating | Description | Criteria [mg/l] |
| 1 | Practically non-toxic | 100 < LC/EC/IC50 ≤ 1000 |
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) |
| 0 | Negligible | AITE > 20 |
D1: Skin irritation or corrosion
| Rating | Description | Sign | GHS category |
| 1 | Mildly irritating | Mild erythema with or | Mild Irritant Category 3 |
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 |
| No Information |
E1: Tainting of seafood
| Rating | Description |
| NT | The substance has been tested for tainting and found not to taint following exposure of the fish for 24h to 1mg/l. |
E2: Behaviour of chemicals in the marine environment
| Rating | Description |
| D | Dissolves |
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.