NITE - Chemical Management Field

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

GENERAL INFORMATION

Item	Information
CAS RN	7440-58-6
Chemical Name	hafnium
Substance ID	m-nite-7440-58-6_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.	FY2006	GHS Classification Manual （10 Feb, 2006）
2	Flammable gases	Not classified (Not applicable)	- -	-	-	Solid (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)	- -	-	-	Solid (GHS definition)	FY2006	GHS Classification Manual （10 Feb, 2006）
5	Gases under pressure	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2006	GHS Classification Manual （10 Feb, 2006）
6	Flammable liquids	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2006	GHS Classification Manual （10 Feb, 2006）
7	Flammable solids	Classification not possible	- -	-	-	Although 25% or more of hydrated powder is classified into UNRTDG class 4.1, combustibility changes with production process and particle sizes. And it cannot be judged without performing defined test on the corresponding production process and the particle diameter of hafnium powder.	FY2006	GHS Classification Manual （10 Feb, 2006）
8	Self-reactive substances and mixtures	Not classified (Not applicable)	- -	-	-	There are no chemical groups associated with explosive or self-reactive properties present in the molecule.	FY2006	GHS Classification Manual （10 Feb, 2006）
9	Pyrophoric liquids	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2006	GHS Classification Manual （10 Feb, 2006）
10	Pyrophoric solids	Classification not possible	- -	-	-	Although dry powder is classified into UNRTDG Class 4.2, the property could remarkably change according to its particle diameter, etc. So it cannot be judged unless the specified test is performed on real samples.	FY2006	GHS Classification Manual （10 Feb, 2006）
11	Self-heating substances and mixtures	Classification not possible	- -	-	-	Although dryness powder is classified into the UNRTDG class 4.2, property changes with particle diameter etc. remarkably. So it cannot be judged without a set test of real samples.	FY2006	GHS Classification Manual （10 Feb, 2006）
12	Substances and mixtures which, in contact with water, emit flammable gases	Classification not possible	- -	-	-	Although there is the information on the flammability of moistened article (Bretherick (J) (5th, 1998) p607), no data based on a set test method.	FY2006	GHS Classification Manual （10 Feb, 2006）
13	Oxidizing liquids	Not classified (Not applicable)	- -	-	-	Solid (GHS definition)	FY2006	GHS Classification Manual （10 Feb, 2006）
14	Oxidizing solids	Not classified (Not applicable)	- -	-	-	Containing no oxygen , chlorine and fluorine.	FY2006	GHS Classification Manual （10 Feb, 2006）
15	Organic peroxides	Not classified (Not applicable)	- -	-	-	Inorganic substance	FY2006	GHS Classification Manual （10 Feb, 2006）
16	Corrosive to metals	Classification not possible	- -	-	-	Liquid at a test temperature, 55degC. Test methods applicable to solid substances are not available.	FY2006	GHS Classification Manual （10 Feb, 2006）
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)	Classification not possible	- -	-	-	No data available	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)	- -	-	-	Solid (GHS definition)	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	- -	-	-	Classification not possible due to lack of data	FY2006	GHS Classification Manual （10 Feb, 2006）
3	Serious eye damage/eye irritation	Classification not possible	- -	-	-	Insufficient 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	Classification not possible	- -	-	-	No data available	FY2006	GHS Classification Manual （10 Feb, 2006）
6	Carcinogenicity	Classification not possible	- -	-	-	No data available	FY2006	GHS Classification Manual （10 Feb, 2006）
7	Reproductive toxicity	Classification not possible	- -	-	-	No data available	FY2006	GHS Classification Manual （10 Feb, 2006）
8	Specific target organ toxicity - Single exposure	Classification not possible	- -	-	-	Insufficient data available.	FY2006	GHS Classification Manual （10 Feb, 2006）
9	Specific target organ toxicity - Repeated exposure	Category 2 (liver)	Warning	H373	P260 P314 P501	As the information including toxicity test data in laboratory animals by repeated exposures of hafnium, and occupational exposures or epidemiological surveys and case reports etc. in humans have not been obtained, it was not able to be classified. On the other hand, in the 90-days feeding administration tests to the rat of hafnium tetrachloride, as the effects on the livers of the some animals of the 1000 ppm (equivalent for 50mg/kg/day) group, and the most animals of the 10000 ppm (equivalent for 500mg/kg/day) groups are observed (ACGIH 7th, 2001), in ACGIH, the recommended value of acceptable concentrations of hafnium and its compound is set as 0.5 mg/m3. Since the recommended value of acceptable concentrations of hafnium and its compound is set, there are histories which considered them as "the Hazardous Materials. Requiring Notification" provided in the 1st clause of Article 57-2 of the industrial safety and health laws. In consideration of the above histories, in the above tests which are made into the basis for setting of recommended value of acceptable concentrations by ACGIH, based on the description that the effects on the liver were observed in the 1000 ppm group in the Category 2 guidance value range (ACGIH 7th, 2001), it was classified into Category 2 (liver) about hafnium and its compound.	FY2006	GHS Classification Manual （10 Feb, 2006）
10	Aspiration hazard	Classification not possible	- -	-	-	No data available	FY2006	GHS Classification Manual （10 Feb, 2006）

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	FY2006	GHS Classification Manual （10 Feb, 2006）
11	Hazardous to the aquatic environment Long term (Chronic)	Classification not possible	- -	-	-	No data available.	FY2006	GHS Classification Manual （10 Feb, 2006）
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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