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

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Acetic Anhydride

Description Top

CAS number 108-24-7
UN number 1715
Chemical formula C4H6O3
Standard European Behaviour Classification (SEBC) Dissolves (D)
GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
0 R 1 NI 1 0 2 3 3 A NI 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
Acetanhydride
Acetic Acid Anhydride
Acetyl Anhydride
Acetyl Ether
Acetyl Oxide
Ethanoic Anhydrate
Ethanoic Anhydride
Ethanoic Acid Anhydride
Anhydride Acetique
Acetic Anhydride
Anhydryde Acetique


Physico-chemical properties Top

Chemical formula C4H6O3
Molar mass 102.09 [g/mol]
State Liquid at 25°C and 1 atm
Fusion temperature -73.5 [°C]
Boiling temperature 139 [°C]
Critical temperature 606 [°C]
Density
1080 [Kg/m³] at a temperature of 20°C
Surface tension
32.7 [mN/m] at a temperature of 20°C
31.93 [mN/m] at a temperature of 25°C
Kinematic viscosity
0.84 [cSt] at a temperature of 20°C
0.78 [cSt] at a temperature of 25°C
Hydrosolubility
113500 [mg/l] at a temperature of 20°C and salinity of 0‰
262000 [mg/l] at a temperature of 25°C and salinity of 0‰
Vapour pressure
465 [Pa] at a temperature of 20°C
680 [Pa] at a temperature of 25°C
Critical pressure 4000000 [Pa]
Vapour density 3.1
Flash point (Pensky-Martens closed cup) 49 [°C]
Flash point (Cleveland open cup) 54 [°C]
Lower explosivity limit (LEL) 2.7 [%]
Upper explosivity limit (UEL) 10.3 [%]
Combustion enthalpy 16400000 [J/Kg]
Specific heat capacity 1648 [J/(Kg·K)]
Combustion efficiency 98 [%]
Mass flow rate of the combustion surface 0.03 [Kg/(m²·s)]
Radiative fraction 23 [%]
Henry's constant 0.57 [mol/(m³·Pa)]


Behaviour Top

Log Kow -0.58
Log Koc 1.11
Hydrolysis (Half-life) 1 day
Biodegradation in estuary environment (Half-life) 10 days
Biodegradation in marine environment (Half-life) 10 days
Standard European Behaviour Classification (SEBC) Dissolves (D)
Bioconcentration factor (BCF) 1


Ecotoxicity Top

Lowest median lethal concentration (LC50) on algae 9 [mg/l]
Lowest median lethal concentration (LC50) on crustacean 55 [mg/l]
Lowest median lethal concentration (LC50) on fishes 265 [mg/l]
Highest no observed effect concentration (NOEC) on algae 9 [mg/l]
Highest no observed effect concentration (NOEC) on crustacean 31.4 [mg/l]
Highest no observed effect concentration (NOEC) on fishes 34.3 [mg/l]
Assessment factor (AF)
1000 on the short-term
1000 on the long-term
Predicted No Effect Concentration (PNEC)
9 [µg/l] on the short-term
9 [µg/l] on the long-term


Hazards Top

Flammable
Corrosive
Harmful

Danger

IDLH 200 [ppm]
Hazards statements
Physical
H226
Flammable liquid and vapour.
Health
H302
Harmful if swallowed.
H314
Causes severe skin burns and eye damage.
H332
Harmful if inhaled.

Precautionary statements
Prevention
P210
Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P233
Keep container tightly closed.
P235
Keep cool.
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.
P260
Do not breathe dust/fume/gas/mist/vapours/spray.
P261
Avoid breathing dust/fume/gas/mist/vapours/spray.
P264
Wash ... thoroughly after handling.
P270
Do no eat, drink or smoke when using this product.
P271
Use only outdoors or in a well-ventilated area.
P284
Wear respiratory protection.
Response
P303
IF ON SKIN (or hair):
P310
Immediately call a POISON CENTER or doctor/physician.
P320
Specific treatment is urgent (see ... on this label).
P330
Rinse mouth.
P370
In case of fire:
P378
Use ... for extinction.
P301 + P312
IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
P304 + P340
IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
Storage
P405
Store locked up.
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
0 R 1 NI 1 0 2 3 3 A NI 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
R 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]
1 Slight 300 < 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)
2 Moderate 2 < AITE ≤ 10
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
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
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

Flammable
Corrosive
Harmful

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.

  Contact us

Web: https://www.hns-ms.eu/

Tel : +32 (0)2 773-2102

Mail : hns-ms@naturalsciences.be

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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.