NITE - Chemical Management Field

Latest GHS Classification Results by the Japanese Government (edited by NITE)

GENERAL INFORMATION

Item	Information
CAS RN	7440-21-3
Chemical Name	Silicon (powder, amorphous)
Substance ID	m-nite-7440-21-3_v1
Download of Excel format	Excel file

REFERENCE INFORMATION

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)

PHYSICAL HAZARDS

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)	- -	-	-	There are no chemical groups associated with explosive properties present in the molecules.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
2	Flammable gases	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
3	Aerosols	Not classified (Not applicable)	- -	-	-	Not aerosol products.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
4	Oxidizing gases	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
5	Gases under pressure	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
6	Flammable liquids	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
7	Flammable solids	Category 2	Warning	H228	P370+P378 P210 P240 P241 P280	Classified into Category 2 since powder is classified into Division 4.1, PG III in UNRTDG (UN1346). As to granular products, designated tests should be conducted to confirm.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
8	Self-reactive substances and mixtures	Not classified (Not applicable)	- -	-	-	There are no chemical groups present in the molecule associated with explosive or self-reactive properties.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
9	Pyrophoric liquids	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
10	Pyrophoric solids	Not classified	- -	-	-	Classified into Not classified since the substance is very stable at room temperature (Encyclopedia Chimica (1994)). The substance is classified into Division 4.1, PG III in UNRTDG (UN1346), not being classified into upper Division 4.2, PG I.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
11	Self-heating substances and mixtures	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
12	Substances and mixtures which, in contact with water, emit flammable gases	Not classified	- -	-	-	Classified into Not classified since the substance is judged to be stable against water from the description that bulk Si is unreactive to O2, H2O, H halaides (except HF) (Sax (11th, 2004) and is classified into Division 4.1, PG III in UNRTDG (UN1346), not being classified into upper Division 4.3.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
13	Oxidizing liquids	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
14	Oxidizing solids	Not classified (Not applicable)	- -	-	-	Inorganic compounds containing no oxygen and halogen atoms	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
15	Organic peroxides	Not classified (Not applicable)	- -	-	-	Inorganic compound	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
16	Corrosive to metals	Classification not possible	- -	-	-	Test methods applicable to solid substances are not available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
17	Desensitized explosives	-	- -	-	-	-	-	-

HEALTH HAZARDS

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)	Not classified	- -	-	-	Based on a LD50 value of 3160 mg/kg bw for rats (IUCLID (2000)), the substance was classified into "Not classified" in JIS Classification (corresponding to Category 5 in GHS classification).	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
1	Acute toxicity (Dermal)	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
1	Acute toxicity (Inhalation: Gases)	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
1	Acute toxicity (Inhalation: Vapours)	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
1	Acute toxicity (Inhalation: Dusts and mists)	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
2	Skin corrosion/irritation	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
3	Serious eye damage/eye irritation	Category 2B	- Warning	H320	P305+P351+P338 P337+P313 P264	Based on a report of "Slightly irritating" in a rabbit test (IUCLID (2000)), the substance was classified into Category 2B.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
4	Respiratory sensitization	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
4	Skin sensitization	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
5	Germ cell mutagenicity	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
6	Carcinogenicity	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
7	Reproductive toxicity	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
8	Specific target organ toxicity - Single exposure	Classification not possible	- -	-	-	Although there is a result that pulmonary epithelial lesions were found in rabbits after intratracheal instillation at 25 mg (HSDB (2009)), classification was not possible due to lack of other sufficient data.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
9	Specific target organ toxicity - Repeated exposure	Classification not possible	- -	-	-	Since no toxic signs or histopathological findings were observed after dietary administration for 1-month at 800 mg/kg to dogs or rats (HSDB (2009)), the substance corresponds to "Not classified" with oral exposure. However, classification was not possible due to lack of or insufficient data with other exposure routes.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
10	Aspiration hazard	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）

ENVIRONMENTAL HAZARDS

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)	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
11	Hazardous to the aquatic environment Long term (Chronic)	Classification not possible	- -	-	-	No data available.	FY2009	GHS Classification Guidance by the Japanese Government （March, 2009）
12	Hazardous to the ozone layer	-	- -	-	-	-	-	-

NOTE:

GHS Classification Result by the Japanese Government is intended to provide a reference for preparing a GHS label or SDS for users. To include the same classification result in a label or SDS for Japan is NOT mandatory.
Users can cite or copy this classification result when preparing a GHS label or SDS. Please be aware, however, that the responsibility for a label or SDS prepared by citing or copying this classification result lies with users.
This GHS classification was conducted based on the information sources and the guidance for classification and judgement which are described in the GHS Classification Guidance for the Japanese Government etc. Using other literature, test results etc. as evidence and including different content from this classification result in a label or SDS are allowed.
Hazard statement and precautionary statement will show by hovering the mouse cursor over a code in the column of "Hazard statement" and "Precautionary statement," respectively. In the excel file, both the codes and statements are provided.
A blank or "-" in the column of "Classification" denotes that a classification for the hazard class was not conducted in the year.
An asterisk “*” in the column of “Classification” denotes that “Not classified (or No applicable)” and/or “Classification not possible” is applicable. Details are described in the column of “Rationale for the classification”. If no English translation is available for “Rationale for the classification,” please refer to the Japanese version of the results.

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