GHS Classification Result
PHYSICAL HAZARDS
HEALTH HAZARDS
ENVIRONMENTAL HAZARDS
NOTE:
Reference：
Chemical Name：4-Aminopyridine
CAS：504-24-5
Result：
| ID: | 22A4090 |
| Classifier: | Ministry of Health, Labour and Welfare （MHLW）, Ministry of the Environment （MOE） |
| Year Classified: | FY2010 |
| Reference Manual: | GHS Classification Guidance by the Japanese Government （July, 2010） |
PHYSICAL HAZARDS
| Hazard class | Classification | Symbol | Signal word | Hazard statement | Precautionary statement | Rationale for the classification | |
|---|---|---|---|---|---|---|---|
| 1 | Explosives | Not applicable | - | - | - | - | There are no chemical groups associated with explosive properties present in the molecule. |
| 2 | Flammable gases （including chemically unstable gases） | Not applicable | - | - | - | - | Solid (GHS definition) |
| 3 | Aerosols | Not applicable | - | - | - | - | Not aerosol products. |
| 4 | Oxidizing gases | Not applicable | - | - | - | - | Solid (GHS definition) |
| 5 | Gases under pressure | Not applicable | - | - | - | - | Solid (GHS definition) |
| 6 | Flammable liquids | Not applicable | - | - | - | - | Solid (GHS definition) |
| 7 | Flammable solids | Classification not possible | - | - | - | - | No data available. |
| 8 | Self-reactive substances and mixtures | Not applicable | - | - | - | - | There are no chemical groups present in the molecule associated with explosive or self-reactive properties. |
| 9 | Pyrophoric liquids | Not applicable | - | - | - | - | Solid (GHS definition) |
| 10 | Pyrophoric solids | Not classified | - | - | - | - | Since the substance is rated as Division 6.1(II) by UNRTDG (UN2671), it does not correspond to the pyrophoric solid of a higher rank. |
| 11 | Self-heating substances and mixtures | Classification not possible | - | - | - | - | No data available. |
| 12 | Substances and mixtures which, in contact with water, emit flammable gases | Not applicable | - | - | - | - | The chemical structure of the substance does not contain metals or metalloids (B, Si, P, Ge, As, Se, Sn, Sb, Te, Bi, Po, At). |
| 13 | Oxidizing liquids | Not applicable | - | - | - | - | Solid (GHS definition) |
| 14 | Oxidizing solids | Not applicable | - | - | - | - | Organic compounds containing no oxygen, fluorine or chlorine. |
| 15 | Organic peroxides | Not applicable | - | - | - | - | Organic compounds containing no bivalent -O-O- structure. |
| 16 | Corrosive to metals | Classification not possible | - | - | - | - | Test methods applicable to solid substances are not available. |
| Hazard class | Classification | Symbol | Signal word | Hazard statement | Precautionary statement | Rationale for the classification | |
|---|---|---|---|---|---|---|---|
| 1 | Acute toxicity （Oral） | Category 2 |
|
Danger | H300: Fatal if swallowed |
P301+P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P264: Wash ... thoroughly after handling. P270: Do not eat, drink or smoke when using this product. P321: Specific treatment （see ... on this label）. P330: Rinse mouth. P405: Store locked up. P501: Dispose of contents/container to ... |
Based on the rat LD50 values of 20 mg/kg (EPA RED (2007)) and 21 mg/kg (PATTY, 5th (2001)), the substance was classified as Category 2. |
| 1 | Acute toxicity （Dermal） | Category 3 |
|
Danger | H311: Toxic in contact with skin |
P302+P352: IF ON SKIN: Wash with plenty of soap and water. P280: Wear protective gloves/protective clothing/eye protection/face protection. P312: Call a POISON CENTER or doctor/physician if you feel unwell. P322: Specific treatment （see ... on this label）. P361: Remove/Take off immediately all contaminated clothing. P363: Wash contaminated clothing before reuse. P405: Store locked up. P501: Dispose of contents/container to ... |
Based on the rabbit LD50 values of 327 mg/kg (EPA RED (2007)), the substance was classified into Category 3. |
| 1 | Acute toxicity （Inhalation: Gases） | Not applicable | - | - | - | - | Solid (GHS definition) |
| 1 | Acute toxicity （Inhalation: Vapours） | Classification not possible | - | - | - | - | No data available. |
| 1 | Acute toxicity （Inhalation: Dusts and mists） | Classification not possible | - | - | - | - | No data available. |
| 2 | Skin corrosion/irritation | Classification not possible | - | - | - | - | No data were available. This substance is a strong base and may have mild to moderate irritant potential to the skin (PATTY, 5th (2001)). |
| 3 | Serious eye damage/eye irritation | Classification not possible | - | - | - | - | No data were available. This substance is a strong base and may have mild to moderate irritant potential to the eye (PATTY, 5th (2001)). |
| 4 | Respiratory sensitization | Classification not possible | - | - | - | - | No data available. |
| 4 | Skin sensitization | Classification not possible | - | - | - | - | No data available. |
| 5 | Germ cell mutagenicity | Classification not possible | - | - | - | - | The classification was not possible due to lack of in vivo test data. As relevant information, as for in vitro study, negative results in the Ames test were reported (IRIS (2010)). |
| 6 | Carcinogenicity | Classification not possible | - | - | - | - | The substance was classified as "Classification not possible" based on the carcinogenicity "Category D" in the US EPA assessment (IRIS (2010)). |
| 7 | Reproductive toxicity | Classification not possible | - | - | - | - | No data available. |
| 8 | Specific target organ toxicity - Single exposure | Category 1 (nervous system) |
|
Danger | H370: Causes damage to organs (nervous system) |
P307+P311: IF exposed: Call a POISON CENTER or doctor/physician. P260: Do not breathe dust/fume/gas/mist/vapours/spray. P264: Wash ... thoroughly after handling. P270: Do not eat, drink or smoke when using this product. P321: Specific treatment （see ... on this label）. P405: Store locked up. P501: Dispose of contents/container to ... |
This substance was used as the therapeutic drug for improvement of walking in multiple sclerosis. It blocks potassium channels and thereby increases acetylcholine and possibly noradrenaline release at nerve terminals. Although it has little effect on the autonomic nervous system or muscles, it produces major side effects on the central nervous system such as tremors, excitability, and convulsions (PATTY, 5th (2001)). It was reported that tonic-clonic convulsion occurred with symptoms such as nausea, vomiting, and dizziness in one of two patients who ingested approx. 60 mg (HSDB (2010)). And it was reported that as acute poisoning symptoms by the substance, vellication, abdominal spasm, paresthesia of lower limbs, increased muscle tone, and confusion, etc. were noted (HSDB (2010)). Based on these documents in humans described above, the substance was classified as Category 1 (nervous system). |
| 9 | Specific target organ toxicity - Repeated exposure | Category 1 (nervous system) |
|
Danger | H372: Cause damage to organs through prolonged or repeated exposure (nervous system) |
P260: Do not breathe dust/fume/gas/mist/vapours/spray. P264: Wash ... thoroughly after handling. P270: Do not eat, drink or smoke when using this product. P314: Get medical advice/attention if you feel unwell. P501: Dispose of contents/container to ... |
This substance was used as the therapeutic drug for improvement of walking in multiple sclerosis. It blocks potassium channels and thereby increases acetylcholine and possibly noradrenaline release at nerve terminals. Although it has little effect on the autonomic nervous system or muscles, it produces major side effects on the central nervous system such as tremors, excitability, and convulsions (PATTY, 5th (2001)). It was also reported that as side effects in humans who was ingested low levels of the substance (5 - 30 mg/day), oversensitiveness, dizziness, memory alteration, arterial vasospasm, and peripheral paresthesia were shown. And in the case of higher doses as an accidental poisoning, additional effects such as weakness, feeling impending doom, dyspnea, agitation, etc. were noted (EPA RED (2007)). Based on these documents about humans, the substance was classified as Category 1 (nervous system). |
| 10 | Aspiration hazard | Classification not possible | - | - | - | - | No data available. |
| Hazard class | Classification | Symbol | Signal word | Hazard statement | Precautionary statement | Rationale for the classification | |
|---|---|---|---|---|---|---|---|
| 11 | Hazardous to the aquatic environment （Acute） | Category 2 | - | - | H401: Toxic to aquatic life |
P273: Avoid release to the environment. P501: Dispose of contents/container to ... |
Classified into Category 2 from its 96h-LC50 = 3.4 mg/L for fish (Oryzias latipes) (Test for the Ecological Effect of Chemical Substances (Ministry of the Environment), 2005). |
| 11 | Hazardous to the aquatic environment （Long-term） | Category 2 |
|
- | H411: Toxic to aquatic life with long lasting effects |
P273: Avoid release to the environment. P391: Collect spillage. P501: Dispose of contents/container to ... |
Classified into Category 2 since its acute toxicity is Category 2 and it is not rapidly degradable (Non-biodegradable, BOD degradation rate: 0% (Biodegradation and Bioconcentration of Existing Chemical Substances under the Chemical Substances Control Law, 1982)). |
| 12 | Hazardous to the ozone layer | Classification not possible | - | - | - | - | This substance is not listed in Annexes to the Montreal Protocol. |
NOTE:
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* Classification was conducted by relevant Japanese Ministries in accordance with GHS Classification Guidance for the Japanese Government, and is intended to provide a reference for preparing GHS labelling and SDS for users. * This is a provisional English translation of classification results and is subject to revision without notice. * The responsibility for any resulting GHS labelling and SDS referenced from this site is with users. |
Reference：
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Reference Manual |
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Definitions / Abbreviations |
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Model Label by MHLW |
MHLW Website （in Japanese Only） |
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Model SDS by MHLW |
MHLW Website （in Japanese Only） |