NITE - Chemical Management Field

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

GENERAL INFORMATION

Item	Information
CAS RN	583-60-8
Chemical Name	2-methylcyclohexanone
Substance ID	m-nite-583-60-8_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 molecules.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
2	Flammable gases	Not classified (Not applicable)	- -	-	-	Liquid (GHS definition)	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
3	Aerosols	Not classified (Not applicable)	- -	-	-	Not aerosol products.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
4	Oxidizing gases	Not classified (Not applicable)	- -	-	-	Liquid (GHS definition)	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
5	Gases under pressure	Not classified (Not applicable)	- -	-	-	Liquid (GHS definition)	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
6	Flammable liquids	Category 3	Warning	H226	P303+P361+P353 P370+P378 P403+P235 P210 P233 P240 P241 P242 P243 P280 P501	Its flash point is 48degC (c. c.; Ullmanns (E) (6th, 2003)), which is above 23degC and below 60degC.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
7	Flammable solids	Not classified (Not applicable)	- -	-	-	Liquid (GHS definition)	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
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.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
9	Pyrophoric liquids	Classification not possible	- -	-	-	No data available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
10	Pyrophoric solids	Not classified (Not applicable)	- -	-	-	Liquid (GHS definition)	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
11	Self-heating substances and mixtures	Classification not possible	- -	-	-	Test methods applicable to liquid substances are not available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
12	Substances and mixtures which, in contact with water, emit flammable gases	Not classified (Not applicable)	- -	-	-	The chemical structure of the substance does not contain metals or metalloids (B, Si, P, Ge, As, Se, Sn, Sb, Te, Bi, Po, At).	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
13	Oxidizing liquids	Not classified (Not applicable)	- -	-	-	The substance contains oxygen (but not fluorine or chlorine) which is chemically bonded only to carbon.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
14	Oxidizing solids	Not classified (Not applicable)	- -	-	-	Liquid (GHS definition)	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
15	Organic peroxides	Not classified (Not applicable)	- -	-	-	Organic compounds containing no bivalent -O-O- structure	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
16	Corrosive to metals	Classification not possible	- -	-	-	No data available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
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)	Category 4	Warning	H302	P301+P312 P264 P270 P330 P501	Based on its LD50 = 2.14 mL/kg = 1977 mg/kg for rats (PATTY (5th, 2001)), the substance was classified into Category 4.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
1	Acute toxicity (Dermal)	Category 4	Warning	H312	P302+P352 P362+P364 P280 P312 P321 P501	Based on its LD50 = 1.77 mL/kg = 1637 mg/kg for rabbits (PATTY (5th, 2001)), the substance was classified into Category 4.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
1	Acute toxicity (Inhalation: Gases)	Not classified (Not applicable)	- -	-	-	Liquid (GHS definition)	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
1	Acute toxicity (Inhalation: Vapours)	Category 4	Warning	H332	P304+P340 P261 P271 P312	Since inhalation of 2800 ppm of the substance for 4 hours killed three of six rats (ACGIH (2001)), and it is rated R20 in the EU classification, the substance was classified into Category 4. As relevant information, since the saturated vapour pressure concentration at 25degC is 3950 ppm, the substance is considered to be a vapour with almost no included mists at the test concentration (2800 ppm).	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
1	Acute toxicity (Inhalation: Dusts and mists)	Classification not possible	- -	-	-	No data available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
2	Skin corrosion/irritation	Not classified	- -	-	-	The substance was moderately irritating when held in contact with the skin of guinea pigs for 24 hours (PATTY (5th, 2001)). However, since it was mildly irritating to rabbit skin, producing a grade 3 response (range 1 to 10) when left in contact with the skin for 24 hours (PATTY (5th, 2001))., the substance was classified into "Not classified" in JIS classification (equivalent to Category 3 in UN GHS). As relevant information, it is said that repeated open application of the substance in humans did not cause irritation (GESTIS (accessed in August 2008)).	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
3	Serious eye damage/eye irritation	Category 2A	Warning	H319	P305+P351+P338 P337+P313 P264 P280	Based on the result of grade 5 (scale of 1 to 10), as it causes severe corneal burn when applied to the eyes of rabbits (PATTY (5th, 2001)), the substance was classified into Category 2A.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
4	Respiratory sensitization	Classification not possible	- -	-	-	No data available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
4	Skin sensitization	Classification not possible	- -	-	-	No data available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
5	Germ cell mutagenicity	Classification not possible	- -	-	-	No data available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
6	Carcinogenicity	Classification not possible	- -	-	-	No data available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
7	Reproductive toxicity	Classification not possible	- -	-	-	No data available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
8	Specific target organ toxicity - Single exposure	Category 3 (respiratory tract irritation, narcotic effects)	Warning	H335 H336	P304+P340 P403+P233 P261 P271 P312 P405 P501	As the results of a mouse inhalation exposure test of 2-methylcyclohexanone, irritating to the eyes and respiratory tract has been reported (PATTY (5th, 2001)), and as characteristics of an isomeric mixture of methylcyclohexanones, at low concentrations, it was described to be irritating to the eyes, the nasal cavity, and the throat (PATTY (5th, 2001)). In addition, anesthesia and hypothermia were observed in rabbits that survived dermal administration of 2-methylcyclohexanone (PATTY (5th, 2001)), and rabbits or cats became somnolent within one hour after exposure to 2-methylcyclohexanone via inhalation (ACGIH (2001)). Also as characteristics of high concentration exposure of an isomeric mixture of methylcyclohexanones, inhibition of the central nervous system and anesthesia were indicated (PATTY (5th, 2001)). Based on the above results, the substance was classified into Category 3 (respiratory tract irritation, narcotic effects).	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
9	Specific target organ toxicity - Repeated exposure	Classification not possible	- -	-	-	A test in which rabbits were exposed by inhalation of an isomeric mixture of methylcyclohexanones solely provided data on repeated exposure. Exposure of methylcyclohexanones at 182 and 514 ppms for 10 weeks (90-day conversion, 0.64, 1.81 mg/L) or 1139 and 1822 ppms for 3 weeks (90-day conversion, 1.21, 2.04 mg/L) caused a few minor effects, including slight conjunctival congestion, but no major toxicities (PATTY (5th, 2001)). However, since the test substance was not 2-methylcyclohexanone but an isomeric mixture of methylcyclohexanones, the tested animal species was rabbit only and the test was performed many years ago (1943), and details of the testing design, including the number of used animals, inspected organs (other than the liver and the kidneys) are not indicated, it is doubtful that the substance should be classified into "Not classified", so it was classified into "Classification not possible".	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
10	Aspiration hazard	Classification not possible	- -	-	-	No data available.	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）

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)	Not classified	- -	-	-	Based on its 24h-EC50 = 377 mg/L for crustaceans (Daphinia magna) (ECOTOX, 2008), the substance was classified into "Not classified".	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
11	Hazardous to the aquatic environment Long term (Chronic)	Not classified	- -	-	-	Since the substance is water soluble (water solubility, 5142 mg/L (SRC, 2005)) and its preexisting classification for acute toxicity is "Not classified", it was classified into "Not classified".	FY2008	GHS Classification Guidance by the Japanese Government （Sep, 2008）
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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