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Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)

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N-Butyl Acrylate

Description Top

CAS number 141-32-2
UN number 2348
Chemical formula C7H12O2
Accident occurred Yes
Standard European Behaviour Classification (SEBC) Floater that evaporates and dissolves (FED)
Notable risks Polymerize easily, inhibitor in comercial products.
GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
2 R 3 NI 1 1 1 2 2 SsA NI FED 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
Acrylic Acid, Butyl Ester
Acrylic Acid, N-Butyl Ester
Butyl 2-Propenoate
2-Propenoic Acid, Butyl Ester
2-Propenoic Acid, N-Butyl Ester
Acrylate De N-Butyle
Butyl Acrylate
N-Butyl Acrylate
Acrylate De Butyle


Physico-chemical properties Top

Chemical formula C7H12O2
Molar mass 128.17 [g/mol]
State Liquid at 25°C and 1 atm
Fusion temperature -64.6 [°C]
Boiling temperature 148.8 [°C]
Density
900 [Kg/m³] at a temperature of 20°C
913.1 [Kg/m³] at a temperature of 5°C
908.5 [Kg/m³] at a temperature of 10°C
900.1 [Kg/m³] at a temperature of 20°C
Surface tension
20 [mN/m] at a temperature of 25°C
26.77 [mN/m] at a temperature of 6.1°C
26.56 [mN/m] at a temperature of 11.3°C
25.63 [mN/m] at a temperature of 19.1°C
Interfacial tension
60 [mN/m] at a temperature of 25°C and salinity of 0‰
Kinematic viscosity
2.8255 [cSt] at a temperature of 5°C
2.7518 [cSt] at a temperature of 10°C
2.6219 [cSt] at a temperature of 20°C
Hydrosolubility
2000 [mg/l] at a temperature of 25°C and salinity of 0‰
1610 [mg/l] at a temperature of 20°C and salinity of 0‰
1340 [mg/l] at a temperature of 20°C and salinity of 5‰
1440 [mg/l] at a temperature of 20°C and salinity of 30‰
Vapour pressure
485 [Pa] at a temperature of 20°C
727 [Pa] at a temperature of 25°C
Vapour density 3.9
Flash point (Pensky-Martens closed cup) 39 [°C]
Flash point (Cleveland open cup) 47.8 [°C]
Lower explosivity limit (LEL) 1.3 [%]
Upper explosivity limit (UEL) 9.9 [%]
Combustion enthalpy 29400000 [J/Kg]
Specific heat capacity 1958 [J/(Kg·K)]
Combustion efficiency 96 [%]
Mass flow rate of the combustion surface 0.05 [Kg/(m²·s)]
Radiative fraction 23 [%]
Henry's constant 46.59 [mol/(m³·Pa)]


Behaviour Top

Log Kow 2.36
Log Koc 1.54
Hydrolysis (Half-life) 1100 days
Aqueous photolysis (Half-life) 0.0138 day
Biodegradation in estuary environment (Half-life) 10 days
Biodegradation in marine environment (Half-life) 10 days
Standard European Behaviour Classification (SEBC) Floater that evaporates and dissolves (FED)
Bioconcentration factor (BCF) 13.1


Ecotoxicity Top

Lowest median lethal concentration (LC50) on algae 2.6 [mg/l]
Lowest median lethal concentration (LC50) on crustacean 8.2 [mg/l]
Lowest median lethal concentration (LC50) on fishes 2.1 [mg/l]
Highest no observed effect concentration (NOEC) on crustacean 0.136 [mg/l]
Assessment factor (AF)
100 on the short-term
10000 on the long-term
Predicted No Effect Concentration (PNEC)
21 [µg/l] on the short-term
0.21 [µg/l] on the long-term


Hazards Top

Flammable
Harmful

Warning

Hazards statements
Health
H315
Causes skin irritation.
H317
May cause an allergic skin reaction.
H319
Causes serious eye irritation.
H332
Harmful if inhaled.
H335
May cause respiratory irritation.
Environmental
H412
Harmful to aquatic life with long lasting effects.

Precautionary statements
Prevention
P261
Avoid breathing dust/fume/gas/mist/vapours/spray.
P273
Avoid release to the environment.
P280
Wear protective gloves/protective clothing/eye protection/face protection.
Response
P305 + P351 + P338
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.


GESAMP Top

More information on GESAMP Hazard Evaluation Procedure

GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
2 R 3 NI 1 1 1 2 2 SsA NI FED 2

A1: Bioaccumulation
Rating Description
2 Low potential to bioaccumulate
A1a:
Rating Description Criteria [mg/l]
2 Low potential to bioaccumulate 2 ≤ Log Kow < 3
A1b:
Rating Description
NI No Information
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]
1 Slight 1000 < 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
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
Ss Skin Sensitization Cause specific skin hypersensitivity or allergy following skin contact Category 1 for Skin Sensitizers
A Aspiration Lung injury or chemical pneumonia following aspiration of a chemical through the oral or nasal cavity into the trachea or lower respiratory system Category 1 for Aspiration Toxicity
E1: Tainting of seafood
Rating Description
NI No Information
E2: Behaviour of chemicals in the marine environment
Rating Description
FED Floater that evaporates and dissolves
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

Flammable
Harmful

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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EU flagHNS-MS has been funded by DG-ECHO under agreement ECHO/SUB/2014/693705 and runs from 1 January 2015 to 31 March 2017.