Item | Information |
---|---|
CAS RN | 50-06-6 |
Chemical Name | Phenobarbital |
Substance ID | m-nite-50-06-6_v1 |
Download of Excel format | Excel file |
Item | Information |
---|---|
Guidance used for the classification (External link) | To Guidance List |
UN GHS document (External link) | To UN GHS document |
FAQ(GHS classification results by the Japanese Government) | To FAQ |
List of Information Sources (Excel file) | List of Information Sources |
List of Definitions/Abbreviations | Definitions/Abbreviations |
Sample Label by MHLW (External link) | MHLW Website (in Japanese Only) |
Sample SDS by MHLW (External link) | MHLW Website (in Japanese Only) |
OECD/eChemPortal (External link) | To OECD/eChemPortal (External link) |
Hazard class | Classification | Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | Classification year (FY) | GHS Classification Guidance for the Japanese Government | |
---|---|---|---|---|---|---|---|---|
1 | Explosives | Not classified (Not applicable) |
- |
- | - | Containing no chemical groups with explosive properties | FY2006 | GHS Classification Manual (10 Feb, 2006) |
2 | Flammable gases | Not classified (Not applicable) |
- |
- | - | Classified as "solid" according to GHS definition | FY2006 | GHS Classification Manual (10 Feb, 2006) |
3 | Aerosols | Not classified (Not applicable) |
- |
- | - | Not aerosol products | FY2006 | GHS Classification Manual (10 Feb, 2006) |
4 | Oxidizing gases | Not classified (Not applicable) |
- |
- | - | Classified as "solid" according to GHS definition | FY2006 | GHS Classification Manual (10 Feb, 2006) |
5 | Gases under pressure | Not classified (Not applicable) |
- |
- | - | Classified as "solid" according to GHS definition | FY2006 | GHS Classification Manual (10 Feb, 2006) |
6 | Flammable liquids | Not classified (Not applicable) |
- |
- | - | Classified as "solid" according to GHS definition | FY2006 | GHS Classification Manual (10 Feb, 2006) |
7 | Flammable solids | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
8 | Self-reactive substances and mixtures | Not classified (Not applicable) |
- |
- | - | Containing no chemical groups with explosive or self-reactive properties | FY2006 | GHS Classification Manual (10 Feb, 2006) |
9 | Pyrophoric liquids | Not classified (Not applicable) |
- |
- | - | Classified as "solid" according to GHS definition | FY2006 | GHS Classification Manual (10 Feb, 2006) |
10 | Pyrophoric solids | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
11 | Self-heating substances and mixtures | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
12 | Substances and mixtures which, in contact with water, emit flammable gases | Not classified (Not applicable) |
- |
- | - | Containing no metals or metalloids (B, Si, P, Ge, As, Se, Sn, Sb, Te, Bi, Po, At) | FY2006 | GHS Classification Manual (10 Feb, 2006) |
13 | Oxidizing liquids | Not classified (Not applicable) |
- |
- | - | Classified as "solid" according to GHS definition | FY2006 | GHS Classification Manual (10 Feb, 2006) |
14 | Oxidizing solids | Not classified (Not applicable) |
- |
- | - | Organic compounds containing oxygen (but not fluorine and chlorine), with the oxygen bound to carbon and hydrogen (but not to other elements) | FY2006 | GHS Classification Manual (10 Feb, 2006) |
15 | Organic peroxides | Not classified (Not applicable) |
- |
- | - | Organic compounds containing no "-O-O-" structure | FY2006 | GHS Classification Manual (10 Feb, 2006) |
16 | Corrosive to metals | Classification not possible |
- |
- | - | Test methods applicable to solid substances are not available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
17 | Desensitized explosives | - |
- |
- | - | - | - | - |
Hazard class | Classification | Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | Classification year (FY) | GHS Classification Guidance for the Japanese Government | |
---|---|---|---|---|---|---|---|---|
1 | Acute toxicity (Oral) | Category 3 |
Danger |
H301 | P301+P310 P264 P270 P321 P330 P405 P501 |
Based on the rat LD50 (oral route) value of 162mg/kg (IARC 79 (2001)). | FY2006 | GHS Classification Manual (10 Feb, 2006) |
1 | Acute toxicity (Dermal) | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
1 | Acute toxicity (Inhalation: Gases) | Not classified (Not applicable) |
- |
- | - | Due to the fact that the substance is "solid" according to the GHS definition and inhalation of its gas is not expected. | FY2006 | GHS Classification Manual (10 Feb, 2006) |
1 | Acute toxicity (Inhalation: Vapours) | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
1 | Acute toxicity (Inhalation: Dusts and mists) | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
2 | Skin corrosion/irritation | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
3 | Serious eye damage/eye irritation | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
4 | Respiratory sensitization | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
4 | Skin sensitization | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
5 | Germ cell mutagenicity | Category 1B |
Danger |
H340 | P308+P313 P201 P202 P280 P405 P501 |
Based on the absence of data on multi-generation mutagenicity tests and positive data on germ cell mutagenicity tests in vivo (chromosome aberration tests), described in IARC 79 (2001) and NTP DB (Access on May 2006). |
FY2006 | GHS Classification Manual (10 Feb, 2006) |
6 | Carcinogenicity | Category 2 |
Warning |
H351 | P308+P313 P201 P202 P280 P405 P501 |
Due to the fact that the substance is classified as Group 2B by IARC (2001). | FY2006 | GHS Classification Manual (10 Feb, 2006) |
7 | Reproductive toxicity | Category 2 |
Warning |
H361 | P308+P313 P201 P202 P280 P405 P501 |
Based on the evidence of cleft palate and abnormal behaviour of the offspring observed in teratogenicity studies with mice and rats, described in IARC 79 (2001) (though no data are available regarding parental toxicity). |
FY2006 | GHS Classification Manual (10 Feb, 2006) |
8 | Specific target organ toxicity - Single exposure | Category 3 (Narcotic effects) |
Warning |
H336 | P304+P340 P403+P233 P261 P271 P312 P405 P501 |
Based on the evidence from animal studies including "somnolence" (RTECS (2006)). | FY2006 | GHS Classification Manual (10 Feb, 2006) |
9 | Specific target organ toxicity - Repeated exposure | Category 1 (nervous system, thyroid), Category 2 (liver, kidney) |
Danger Warning |
H372 H373 |
P260 P264 P270 P314 P501 |
Based on the human evidence: "Sedation is the most common side effect of exposure to phenobarbital in humans. Overdosage of phenobarbital leads to nystagmus and ataxia," "In the patient, T4 level was decreased whereas T3 and TSH responses to thyrotropin-releasing hormone were within the normal range" (IARC 79 (2003)), "A 2-yr-old child developed massive hepatic necrosis caused by an unusual hypersensitivity response to phenobarbital that was prescribed for presumed febrile seizures," "phenobarbital induced a hypersensitivity state consisting of tubulointerstitial nephritis, exfoliative dermatitis and hepatitis" (HSDB (2002)). Also based on the evidence from animal studies: "the liver of the test animal showed an occurrence of moderate to severe hypertrophy of centrolobular hepatocytes," "serum T4 and T3 levels were decreased, whereas TSH production was increased," "mild to moderate follicular hypertrophy of the thyroid gland and moderate hepatocellular hypertrophy occurred" (IARC 79 (2003)). The effects on experimental animals were observed at dosing levels within the guidance value ranges for Category 2. Since the priority rating of the study reporting the effects on the liver and kidneys in humans is 2, these effects are classified into Category 2. |
FY2006 | GHS Classification Manual (10 Feb, 2006) |
10 | Aspiration hazard | Classification not possible |
- |
- | - | No data available | FY2006 | GHS Classification Manual (10 Feb, 2006) |
Hazard class | Classification | Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | Classification year (FY) | GHS Classification Guidance for the Japanese Government | |
---|---|---|---|---|---|---|---|---|
11 | Hazardous to the aquatic environment Short term (Acute) | Not classified |
- |
- | - | It was classified as "Not classified" from 96-hour LC50 = 484 mg/L for fish (Pimephales promelas) (Environmental Risk Assessment for Chemical Substances Vol. 11 (Ministry of the Environment, 2013)). | FY2019 | GHS Classification Guidance for the Japanese Government (FY2013 revised edition (Ver. 1.1)) |
11 | Hazardous to the aquatic environment Long term (Chronic) | Not classified |
- |
- | - | If chronic toxicity data are used, then it is classified as "Not classified" because it was not rapidly degradable (a degradation rate by BOD: 0% (Official Bulletin of Economy, Trade and Industry, 2002)), and due to 21-day NOEC = 31 mg/L for crustacea (Daphnia magna) (Results of Aquatic Toxicity Tests of Chemicals conducted by Ministry of the Environment in Japan (Ministry of the Environment, 2003)). If acute toxicity data are used for a trophic level for which chronic toxicity data are not obtained, then it is classified as "Not classified" because it was not rapidly degradable (a degradation rate by BOD: 0% (Official Bulletin of Economy, Trade and Industry, 2002)), and due to 96-hour LC50 = 484 mg/L for fish (Pimephales promelas) (Environmental Risk Assessment for Chemical Substances Vol. 11 (Ministry of the Environment, 2013)). From the above results, it was classified as "Not classified." |
FY2019 | GHS Classification Guidance for the Japanese Government (FY2013 revised edition (Ver. 1.1)) |
12 | Hazardous to the ozone layer | Classification not possible |
- |
- | - | Classification not possible due to lack of data. | FY2019 | GHS Classification Guidance for the Japanese Government (FY2013 revised edition (Ver. 1.1)) |
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