Item | Information |
---|---|
CAS RN | 2426-08-6 |
Chemical Name | n-Butyl 2,3-epoxypropyl ether |
Substance ID | R03-C-013-MHLW |
Classification year (FY) | FY2021 |
Ministry who conducted the classification | Ministry of Health, Labour and Welfare (MHLW) |
New/Revised | Revised |
Classification result in other fiscal year | FY2016 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 | Category 1B |
Danger |
H350 | P308+P313 P201 P202 P280 P405 P501 |
[Rationale for the Classification] Based on (1), clear evidence of carcinogenicity of malignant tumors was observed even though it was in only one species of animals, and based on (4) emphasizing that this substance is a target substance in the public announcement on guidelines in order to prevent the impairment of worker's health caused by the chemical substances decided by the Minister of Health, Labour and Welfare based on paragraph (3) of Article 28 of the Industrial Safety and Health Act. Therefore, it was classified in Category 1B. Besides, evidence of carcinogenicity was also observed in (2) and (3). [Evidence Data] (1) In a carcinogenicity study with rats exposed by inhalation to this substance for two years (6 hours/day, 5 days/week) (OECD TG451, GLP), increased incidences of tumors of the nasal cavity (adenomas/squamous cell carcinomas) were observed in both males and females. In addition, squamous cell papilloma and esthesioneuroepithelioma in males, and adenosquamous carcinoma, esthesioneuroepithelioma, and sarcoma of the nasal cavity in females were also observed. The increased incidence of nasal cavity squamous carcinoma was observed in both females and males and it was regarded as clear evidence of carcinogenicity in rats (Results from Carcinogenicity Studies (Ministry of Health, Labour and Welfare, 2005), IARC 125 (2020)). (2) In a carcinogenicity study with mice exposed by inhalation for two years (6 hours/day, 5 days/week) (OECD TG451, GLP), an increase in the incidence of nasal cavity hemangioma was observed in both males and females. The incidence of nasal cavity hemangioma in both males and females was regarded as a clear evidence of carcinogenicity in mice (Results from Carcinogenicity Studies (Ministry of Health, Labour and Welfare, 2005), IARC 125 (2020)). (3) This substance induced malignant neoplasms in two species of experimental animals. In addition, there was also strong mechanistic evidence that it exhibited key characteristics of carcinogens (enhanced cell proliferation/cell death, genotoxicity (suggestive evidence)) (IARC 125 (2020)). (4) This substance is a target substance in the public announcement on guidelines in order to prevent the impairment of worker's health caused by the chemical substances decided by the Minister of Health, Labour and Welfare based on paragraph (3) of Article 28 of the Industrial Safety and Health Act (guidelines in order to prevent the impairment of worker's health, announcement No. 27 on February 7, 2020). (5) As for the classification results by domestic and international organizations, the IARC classified this substance in Group 2B (IARC 125 (2020)), the Japan Society For Occupational Health (JSOH) classified it in Group 2B (Recommendation of Occupational Exposure Limits (2016)), the EU classified it in Carc. 2 (EU-CLP Classification Results (Accessed Sep. 2021)), the DFG classified it in Category 3 (List of MAK and BAT values 2020 (Accessed Sep. 2021)). [Reference Data, etc.] (6) As for the assessment of carcinogenicity of this substance, no human data were available (IARC 125 (2020)). |
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) | - |
- |
- | - | - |
11 | Hazardous to the aquatic environment Long term (Chronic) | - |
- |
- | - | - |
12 | Hazardous to the ozone layer | - |
- |
- | - | - |
|