Item | Information |
---|---|
CAS RN | 1336-21-6 |
Chemical Name | Ammonium hydroxide |
Substance ID | R03-C-032B-MOE |
Classification year (FY) | FY2021 |
Ministry who conducted the classification | Ministry of the Environment (MOE) |
New/Revised | Revised |
Classification result in other fiscal year | FY2014 FY2006 |
Download of Excel format | Excel file |
Item | Information |
---|---|
Guidance used for the classification (External link) | GHS Classification Guidance for the Japanese Government (FY2019 revised edition (Ver. 2.0)) |
UN GHS document (External link) | UN GHS document |
Definitions/Abbreviations (Excel file) | Definitions/Abbreviations |
Model Label by MHLW (External link) | MHLW Website (in Japanese Only) |
Model SDS by MHLW (External link) | MHLW Website (in Japanese Only) |
OECD/eChemPortal (External link) | eChemPortal |
Hazard class | Classification | Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | |
---|---|---|---|---|---|---|
1 | Explosives | - |
- |
- | - | - |
2 | Flammable gases | - |
- |
- | - | - |
3 | Aerosols | - |
- |
- | - | - |
4 | Oxidizing gases | - |
- |
- | - | - |
5 | Gases under pressure | - |
- |
- | - | - |
6 | Flammable liquids | - |
- |
- | - | - |
7 | Flammable solids | - |
- |
- | - | - |
8 | Self-reactive substances and mixtures | - |
- |
- | - | - |
9 | Pyrophoric liquids | - |
- |
- | - | - |
10 | Pyrophoric solids | - |
- |
- | - | - |
11 | Self-heating substances and mixtures | - |
- |
- | - | - |
12 | Substances and mixtures which, in contact with water, emit flammable gases | - |
- |
- | - | - |
13 | Oxidizing liquids | - |
- |
- | - | - |
14 | Oxidizing solids | - |
- |
- | - | - |
15 | Organic peroxides | - |
- |
- | - | - |
16 | Corrosive to metals | - |
- |
- | - | - |
17 | Desensitized explosives | - |
- |
- | - | - |
Hazard class | Classification | Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | |
---|---|---|---|---|---|---|
1 | Acute toxicity (Oral) | - |
- |
- | - | - |
1 | Acute toxicity (Dermal) | - |
- |
- | - | - |
1 | Acute toxicity (Inhalation: Gases) | - |
- |
- | - | - |
1 | Acute toxicity (Inhalation: Vapours) | - |
- |
- | - | - |
1 | Acute toxicity (Inhalation: Dusts and mists) | - |
- |
- | - | - |
2 | Skin corrosion/irritation | - |
- |
- | - | - |
3 | Serious eye damage/eye irritation | - |
- |
- | - | - |
4 | Respiratory sensitization | - |
- |
- | - | - |
4 | Skin sensitization | - |
- |
- | - | - |
5 | Germ cell mutagenicity | - |
- |
- | - | - |
6 | Carcinogenicity | - |
- |
- | - | - |
7 | Reproductive toxicity | - |
- |
- | - | - |
8 | Specific target organ toxicity - Single exposure | - |
- |
- | - | - |
9 | Specific target organ toxicity - Repeated exposure | - |
- |
- | - | - |
10 | Aspiration hazard | - |
- |
- | - | - |
Hazard class | Classification | Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | |
---|---|---|---|---|---|---|
11 | Hazardous to the aquatic environment Short term (Acute) | Category 3 |
- |
H402 | P273 P501 |
As for this substance, it was decided that the classification was conducted as total ammonia based on expert judgment. It was classified in Category 3 from 96-hour LC50 = 26.8 mg/L for fish (Oncorhynchus mykiss) (a converted value equivalent to ammonium hydroxide. test substance: NH4Cl, pH: 8.29) (Thurston et al., 1981). The classification result was changed from the previous classification by changing the view on which substance was targeted. |
11 | Hazardous to the aquatic environment Long term (Chronic) | Not classified |
- |
- | - | As for this substance, it was decided that the classification was conducted as total ammonia based on expert judgment. If chronic toxicity data are used, then it is classified as "Not classified" due to being rapidly degradable (rapidly nitrified in aquatic environment (SIDS, 2007)), and 32-day NOEC =7.1 mg/L for crustacea (Mysidopsis bahia) (a converted value equivalent to ammonium hydroxide. test substance: NH4Cl, pH: 7.92-8.01) (SIDS, 2007). If acute toxicity data are used for a trophic level for which chronic toxicity data are not obtained (algae, fish), then it is classified as "Not classified" due to being rapidly degradable and a low bioaccumulation estimate (log Kow = -2.66 (PhysProp Database)), despite 96-hour LC50 = 26.8 mg/L for fish (Oncorhynchus mykiss) (a converted value equivalent to ammonium hydroxide. test substance: NH4Cl, pH: 8.29) (Thurston et al., 1981). From the above results, it was classified as "Not classified." |
12 | Hazardous to the ozone layer | Classification not possible |
- |
- | - | This substance is not listed in the Annexes to the Montreal Protocol. |
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