Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)
2,2,4-Trimethyl-1,3-Pentanediol-1-Isobutyrate
Description Top
| CAS number | 25265-77-4 |
| Chemical formula | C12H24O3 |
| Standard European Behaviour Classification (SEBC) | Floater (F) |
GESAMP Hazard profile
| A1 | A2 | B1 | B2 | C1 | C2 | C3 | D1 | D2 | D3 | E1 | E2 | E3 |
| 3 | NI | 2 | NI | 0 | 0 | 1 | 1 | 1 | NI | Fp | 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
Texanol
2,2,4-Trimethyl-1,3-Pentanediol Monoisobutyrate
Propanoic Acid, 2-Methyl-, 3-Hydroxy-2,2,4-Trimethylpentyl Ester
Propanoic Acid, 2-Methyl-, Monoester With 2,2,4-Trimethyl-1,3-Pentanediol
2,2,4-Trimethyl-1,3-Pentanediol-1-Isobutyrate
2,2,4-Trimethyl-1,3-Pentanediol Monoisobutyrate
Propanoic Acid, 2-Methyl-, 3-Hydroxy-2,2,4-Trimethylpentyl Ester
Propanoic Acid, 2-Methyl-, Monoester With 2,2,4-Trimethyl-1,3-Pentanediol
2,2,4-Trimethyl-1,3-Pentanediol-1-Isobutyrate
Physico-chemical properties Top
| Chemical formula | C12H24O3 | ||||
| Molar mass | 216.32 [g/mol] | ||||
| State | Liquid at 25°C and 1 atm | ||||
| Fusion temperature | -50 [°C] | ||||
| Boiling temperature | 244 [°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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| Flash point (Pensky-Martens closed cup) | 122 [°C] | ||||
| Flash point (Cleveland open cup) | 120 [°C] | ||||
| Henry's constant | 0.01 [mol/(m³·Pa)] |
Behaviour Top
| Log Kow | 3.47 |
| Log Koc | 1.47 |
| Hydrolysis (Half-life) | 16.5 days |
| Standard European Behaviour Classification (SEBC) | Floater (F) |
Ecotoxicity Top
| Lowest median lethal concentration (LC50) on algae | 18.4 [mg/l] | |
| Lowest median lethal concentration (LC50) on crustacean | > 95 [mg/l] | |
| Lowest median lethal concentration (LC50) on fishes | 30 [mg/l] | |
| Highest no observed effect concentration (NOEC) on algae | 3.28 [mg/l] | |
| Assessment factor (AF) |
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| Predicted No Effect Concentration (PNEC) |
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GESAMP Top
GESAMP Hazard profile
| A1 | A2 | B1 | B2 | C1 | C2 | C3 | D1 | D2 | D3 | E1 | E2 | E3 |
| 3 | NI | 2 | NI | 0 | 0 | 1 | 1 | 1 | NI | Fp | 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 |
| NI | No Information |
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) |
| 1 | Slight | 10 < 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 |
| 1 | Mildly irritating | Mild conjunctival hype | Irritant Category 2B |
D3: Long-term health effects
| Notation | Hazard endpoint | Description | GHS category |
| No Information |
E1: Tainting of seafood
| Rating | Description |
| NI | No Information |
E2: Behaviour of chemicals in the marine environment
| Rating | Description |
| Fp | Persistent floater |
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 |
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.