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

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Ammonium Hydroxide (25%)

Description Top

CAS number 1336-21-6
UN number 2672
Chemical formula NH5O
Accident occurred Yes
Standard European Behaviour Classification (SEBC) Dissolver that evaporates (DE)
Abilities Solution.
Notable risks Reacts with oxides and peroxides.
GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
NI NI NI NI NI NI NI NI NI NI DE NI

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
Ammonia Aqueous
Ammonia Solution
Ammonia Monohydrate
Ammonia Water
Ammonium Monohydrate
Aqua Ammonia
Aqueous Ammonia
Ammonium Hydroxide ((Nh4)(Oh))
Ammonia, Aqueous Solution
Ammoniac Water
Ammonium Hydroxide (25%)
Ammoniaque (25%)


Physico-chemical properties Top

Chemical formula NH5O
Molar mass 35.05 [g/mol]
State Liquid at 25°C and 1 atm
Fusion temperature -58 [°C]
Boiling temperature 38 [°C]
Density
900 [Kg/m³] at a temperature of 20°C
Surface tension
23.4 [mN/m] at a temperature of 20°C
18.1 [mN/m] at a temperature of 25°C
Hydrosolubility
305000 [mg/l] at a temperature of 20°C and salinity of 0‰
280000 [mg/l] at a temperature of 25°C and salinity of 0‰
Vapour pressure
47400 [Pa] at a temperature of 21.1°C


Behaviour Top

Log Kow -0.17
Log Koc 1.16
Hydrolysis (Half-life) Not hydrolysable
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) 10 days
Biodegradation in marine environment (Half-life) 10 days
Standard European Behaviour Classification (SEBC) Dissolver that evaporates (DE)


Ecotoxicity Top

Lowest median lethal concentration (LC50) on algae 1300 [mg/l]
Lowest median lethal concentration (LC50) on crustacean 9 [mg/l]
Lowest median lethal concentration (LC50) on fishes 2.4 [mg/l]
Highest no observed effect concentration (NOEC) on algae 0.234 [mg/l]
Highest no observed effect concentration (NOEC) on crustacean 2 [mg/l]
Highest no observed effect concentration (NOEC) on fishes 0.06 [mg/l]
Assessment factor (AF)
1000 on the short-term
100 on the long-term
Predicted No Effect Concentration (PNEC)
2.4 [µg/l] on the short-term
0.6 [µg/l] on the long-term


Hazards Top

Corrosive
Harmful
Environmental Hazard

Danger

IDLH 300 [ppm]
Hazards statements
Health
H314
Causes severe skin burns and eye damage.
H335
May cause respiratory irritation.
Environmental
H400
Very toxic to aquatic life.

Precautionary statements
Prevention
P260
Do not breathe dust/fume/gas/mist/vapours/spray.
P280
Wear protective gloves/protective clothing/eye protection/face protection.
Response
P391
Collect spillage.
P301 + P330 + P331
IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P305 + P351 + P338
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
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
NI NI NI NI NI NI NI NI NI NI DE NI

A1: Bioaccumulation
Rating Description
NI No Information
A1a:
Rating Description
NI No Information
A1b:
Rating Description
NI No Information
A2: Biodegradation
Rating Description
NI No Information
B1: Acute aquatic toxicity
Rating Description
NI No Information
B2: Chronic aquatic toxicity
Rating Description
NI No Information
C1: Acute oral toxicity
Rating Description
NI No Information
C2: Acute dermal toxicity (skin contact)
Rating Description
NI No Information
C3: Acute inhalation toxicity
Rating Description
NI No Information
D1: Skin irritation or corrosion
Rating Description
NI No Information
D2: Eye irritation
Rating Description
NI No Information
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
DE Dissolver that evaporates
E3: Interference with the use of coastal amenities
Rating Description
NI No Information

GHS Security Information

Corrosive
Harmful
Environmental Hazard

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

Copyright © 2015–2019 HNS-MS Consortium

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.