NITE - Chemical Management Field

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

GENERAL INFORMATION

Item	Information
CAS RN	541-02-6
Chemical Name	2,2,4,4,6,6,8,8,10,10-Decamethylcyclopentasiloxane
Substance ID	m-nite-541-02-6_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)	To Workplace Safety Site (MHLW)
Sample SDS by MHLW (External link)	To Workplace Safety Site (MHLW)
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 molecule.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
2	Flammable gases	Not classified (Not applicable)	- -	-	-	"Liquids" according to GHS definition.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
3	Aerosols	Not classified (Not applicable)	- -	-	-	Not an aerosol product.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
4	Oxidizing gases	Not classified (Not applicable)	- -	-	-	"Liquids" according to GHS definition.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
5	Gases under pressure	Not classified (Not applicable)	- -	-	-	"Liquids" according to GHS definition.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
6	Flammable liquids	Category 4	- Warning	H227	P370+P378 P210 P280 P403 P501	A flash point of 77 degrees C [closed cup] (Merck MSDS (2005)), which is > 60 degrees C and <= 93 degrees C, corresponds to Category 4.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
7	Flammable solids	Not classified (Not applicable)	- -	-	-	"Liquids" according to GHS definition.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
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.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
9	Pyrophoric liquids	Not classified	- -	-	-	It is conceivable that it does not ignite at normal temperatures from an ignition point of 450 degrees C (Merck MSDS (2005)).	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
10	Pyrophoric solids	Not classified (Not applicable)	- -	-	-	"Liquids" according to GHS definition.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
11	Self-heating substances and mixtures	Classification not possible	- -	-	-	No established test method suitable for liquid substances.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
12	Substances and mixtures which, in contact with water, emit flammable gases	Not classified	- -	-	-	It contains a semimetal (Si), but it is conceivable that it does not react vigorously with water from data on water solubility as 17 ppb (Merck (14th, 2008)) and 0.24 mg/L at 25 degrees C (Howard (1997)).	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
13	Oxidizing liquids	Classification not possible	- -	-	-	An organic compound contains oxygen which is chemically bonded to Si, but the classification is not possible due to no data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
14	Oxidizing solids	Not classified (Not applicable)	- -	-	-	"Liquids" according to GHS definition.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
15	Organic peroxides	Not classified (Not applicable)	- -	-	-	An organic compound that does not contain -O-O- structure.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
16	Corrosive to metals	Classification not possible	- -	-	-	No data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
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	- -	-	-	On the basis of an LD50 value of > 24134 mg/kg for rats (RTECS (2009): the original literature, National Technical Information Service. OTS0572801), it was classified as "Not classified."	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
1	Acute toxicity (Dermal)	Classification not possible	- -	-	-	Lack of data. Besides, an LD50 value of > 16 mL/kg mg/kg (15.35 g/kg) for rats (RTECS (2009)) corresponds to "Not classified", but data were from List 3 and the details were unknown.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
1	Acute toxicity (Inhalation: Gases)	Not classified (Not applicable)	- -	-	-	"Liquids" according to GHS definition.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
1	Acute toxicity (Inhalation: Vapours)	Classification not possible	- -	-	-	Because the category cannot be determined from an LC50 value of > 178 ppm/4h (RTECS (2009)): the original literature, National Technical Information Service. OTS0572802), the classification is not possible. Besides, a reference value of gasses as a vapour with hardly included mist was applied because the test concentration (2.7 mg/L) is lower than 90 % of the saturated vapour pressure concentration (4 mg/L).	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
1	Acute toxicity (Inhalation: Dusts and mists)	Classification not possible	- -	-	-	No data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
2	Skin corrosion/irritation	Classification not possible	- -	-	-	Lack of data. Besides, twenty-four-hour application of 500 mg to rabbit skins reported "mild" irritant (RTECS (2009)), but it was classified as "Classification not possible" due to data from List 3 and unknown details.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
3	Serious eye damage/eye irritation	Not classified	- -	-	-	On the basis of rate 1, which was observed after 24 hours, on a scale of 1 to 10 (least 1 to highest 10) according to the scale of injury (HSDB (2006)), it was classified as "Not classified."	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
4	Respiratory sensitization	Classification not possible	- -	-	-	No data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
4	Skin sensitization	Classification not possible	- -	-	-	No data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
5	Germ cell mutagenicity	Classification not possible	- -	-	-	No data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
6	Carcinogenicity	Classification not possible	- -	-	-	No data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
7	Reproductive toxicity	Classification not possible	- -	-	-	A test, in which rats were exposed for 70 days prior to mating, and males continued to be exposed throughout mating, and females continued to be exposed throughout mating and gestation and re-initiated on lactation day 5, reported that no adverse effects were observed in reproductive parameters related to mating, fertility, gestation, and parturition in the F0 and F1 generations, and no exposure-related changes were observed in birth, growth, and neurological behaviors in fetuses (HSDB (2006)). But, it was classified as "Classification not possible" due to no report on fetal examination at the end of gestation, and lack of data on developmental effects including teratogenicity.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
8	Specific target organ toxicity - Single exposure	Classification not possible	- -	-	-	No data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
9	Specific target organ toxicity - Repeated exposure	Category 2 (lung)	Warning	H373	P260 P314 P501	An rat inhalation test in exposures to vapours at 10 to 160 ppm for 4 weeks or at 26 to 224 ppm for 3 months reported alveolar macrophage accumulation accompanied by an increase in lung weights and interstitial inflammation at 4 weeks at a maximal concentration of 160 ppm (corresponds to 50 ppm = 0.745 mg/L for 90 days) as well as at 3 months at a maximal concentration of 224 ppm (3.40 mg/L), and histopathological evidence indicated the primary target organ following inhalation exposure was the lung (HSDB (2006)). Because the concentration that affected the lung in the 4-week inhalation test corresponds to a range of Category 2 in Guidance values, it was classified in Category 2 (lung). Besides, an increase in liver weights and changes in serum biochemical parameters (an increase in gamma-GT) were observed at the same dose, but they were not used as bases for classification due to lack of histopathological evidence in the liver.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
10	Aspiration hazard	Classification not possible	- -	-	-	No data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）

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.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
11	Hazardous to the aquatic environment Long term (Chronic)	Classification not possible	- -	-	-	No data.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）
12	Hazardous to the ozone layer	Classification not possible	- -	-	-	This substance is not listed in Annexes to the Montreal Protocol.	FY2011	GHS Classification Guidance by the Japanese Government （July, 2010）

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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