NITE - Chemical Management Field

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

GENERAL INFORMATION

Item	Information
CAS RN	2439-01-2
Chemical Name	6-methyl-1,3-dithiolo[4,5-b]quinoxalin-2-one
Substance ID	m-nite-2439-01-2_v2
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)	- -	-	-	Containing no chemical groups with explosive properties	FY2006	GHS Classification Manual （10 Feb, 2006）
2	Flammable gases	Not classified (Not applicable)	- -	-	-	Classified as "solid" according to 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)	- -	-	-	Classified as "solid" according to GHS definition	FY2006	GHS Classification Manual （10 Feb, 2006）
5	Gases under pressure	Not classified (Not applicable)	- -	-	-	Classified as "solid" according to GHS definition	FY2006	GHS Classification Manual （10 Feb, 2006）
6	Flammable liquids	Not classified (Not applicable)	- -	-	-	Classified as "solid" according to GHS definition	FY2006	GHS Classification Manual （10 Feb, 2006）
7	Flammable solids	Classification not possible	- -	-	-	Classification not possible due to lack of data	FY2006	GHS Classification Manual （10 Feb, 2006）
8	Self-reactive substances and mixtures	Not classified (Not applicable)	- -	-	-	Containing no chemical groups with explosive or self-reactive properties	FY2006	GHS Classification Manual （10 Feb, 2006）
9	Pyrophoric liquids	Not classified (Not applicable)	- -	-	-	Classified as "solid" according to GHS definition	FY2006	GHS Classification Manual （10 Feb, 2006）
10	Pyrophoric solids	Classification not possible	- -	-	-	Classification not possible due to lack of data	FY2006	GHS Classification Manual （10 Feb, 2006）
11	Self-heating substances and mixtures	Classification not possible	- -	-	-	Classification not possible due to lack of data	FY2006	GHS Classification Manual （10 Feb, 2006）
12	Substances and mixtures which, in contact with water, emit flammable gases	Not classified (Not applicable)	- -	-	-	Containing no metals or metalloids (B, Si, P, Ge, As, Se, Sn, Sb, Te, Bi, Po, At)	FY2006	GHS Classification Manual （10 Feb, 2006）
13	Oxidizing liquids	Not classified (Not applicable)	- -	-	-	Classified as "solid" according to GHS definition	FY2006	GHS Classification Manual （10 Feb, 2006）
14	Oxidizing solids	Not classified (Not applicable)	- -	-	-	Organic compounds containing oxygen (but not fluorine and chlorine), with the oxygen bound to carbon and hydrogen (but not to other elements)	FY2006	GHS Classification Manual （10 Feb, 2006）
15	Organic peroxides	Not classified (Not applicable)	- -	-	-	Organic compounds containing no "-O-O-" structure	FY2006	GHS Classification Manual （10 Feb, 2006）
16	Corrosive to metals	Classification not possible	- -	-	-	Test methods applicable to solid substances with melting point of >55degC are not available (melting point: 170.2degC (Agricultural Chemical Registration Data)).	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)	Not classified	- -	-	-	Based on the rat LD50 (oral route) value of >3,000mg/kg, together with the absence of mortality (Agricultural Chemical Registration Data).	FY2006	GHS Classification Manual （10 Feb, 2006）
1	Acute toxicity (Dermal)	Classification not possible	- -	-	-	Classification cannot be determined, though the available rat dermal study reported the LC50 value of >500mg/kg (Agricultural Chemical Registration Data).	FY2006	GHS Classification Manual （10 Feb, 2006）
1	Acute toxicity (Inhalation: Gases)	Not classified (Not applicable)	- -	-	-	Due to the fact that the substance is a solid according to the GHS criteria and inhalation of its gas is not expected.	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)	Category 4	Warning	H332	P304+P340 P261 P271 P312	Based on the rat LC50 (inhalation route) value of 2.16mg/L (4 hours) (Agricultural Chemical Registration Data).	FY2006	GHS Classification Manual （10 Feb, 2006）
2	Skin corrosion/irritation	Not classified	- -	-	-	Based on no evidence of irritation observed in rabbit skin irritation tests (Agricultural Chemical Registration Data).	FY2006	GHS Classification Manual （10 Feb, 2006）
3	Serious eye damage/eye irritation	Category 1	Danger	H318	P305+P351+P338 P280 P310	Based on the evidence of moderate to severe eye irritation, with effects persisting for at least 14 days of observation in rabbit eye irritation tests (Agricultural Chemical Registration Data).	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	Category 1	Warning	H317	P302+P352 P333+P313 P362+P364 P261 P272 P280 P321 P501	Based on positive results in guinea pig skin sensitization tests employing the Maximization method (Agricultural Chemical Registration Data).	FY2006	GHS Classification Manual （10 Feb, 2006）
5	Germ cell mutagenicity	Not classified	- -	-	-	Based on negative data in in vitro reverse mutation tests and mouse in vivo micronucleus tests, though in vitro chromosome aberration tests showed positive (Agricultural Chemical Registration Data).	FY2006	GHS Classification Manual （10 Feb, 2006）
6	Carcinogenicity	Not classified	- -	-	-	There was no treatment-related increase in tumor incidence observed in mouse carcinogenicity studies (Agricultural Chemical Registration Data).	FY2006	GHS Classification Manual （10 Feb, 2006）
7	Reproductive toxicity	Not classified	- -	-	-	Based on no evidence of adverse effects on reproduction or offspring development observed in rat 2-generation reproduction studies and rat/rabbit teratogenicity studies (Agricultural Chemical Registration Data).	FY2006	GHS Classification Manual （10 Feb, 2006）
8	Specific target organ toxicity - Single exposure	Category 2 (nervous system)	Warning	H371	P308+P311 P260 P264 P270 P405 P501	In single dose toxicity studies in chickens, "flaccid paralysis without sensory loss (generally, neuromuscular block), somnolency (general suppression of activity), and convulsions" (RTECS (2003)) were found. These effects were observed at dosing levels within the guidance value ranges for Category 2.	FY2006	GHS Classification Manual （10 Feb, 2006）
9	Specific target organ toxicity - Repeated exposure	Classification not possible	- -	-	-	Insufficient data available	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)	Category 1	Warning	H400	P273 P391 P501	It was classified in Category 1 from 48-hour EC50 = 0.015 mg a.i./L for crustacea (Daphnia magna) (A pesticide abstract and evaluation report (Food and Agricultural Materials Inspection Center, 2017), Document for registration standards for agricultural chemicals set by the Minister of Environment to prevent harm to animals and plants in areas of public waters, 2014). (a.i.: active ingredient)	FY2021	GHS Classification Guidance for the Japanese Government (FY2019 revised edition (Ver. 2.0))
11	Hazardous to the aquatic environment Long term (Chronic)	Category 1	Warning	H410	P273 P391 P501	If chronic toxicity data are used, then it is classified in Category 1 due to being not rapidly degradable (a 28-day degradation rate by BOD: 0% (Biodegradation and Bioconcentration Results of Existing Chemical Substances under the Chemical Substances Control Law, METI, 2001)) and 72-hour NOErC = 0.00052 mg a.i./L for algae (Raphidocelis subcapitata) (A pesticide abstract and evaluation report (Food and Agricultural Materials Inspection Center, 2017), Document for registration standards for agricultural chemicals set by the Minister of Environment to prevent harm to animals and plants in areas of public waters, 2014). If acute toxicity data are used for a trophic level for which chronic toxicity data are not obtained (crustacea, fish), then it is classified in Category 1 due to being not rapidly degradable and 48-hour EC50 = 0.015 mg a.i./L for crustacea (Daphnia magna) (A pesticide abstract and evaluation report (Food and Agricultural Materials Inspection Center, 2017), Document for registration standards for agricultural chemicals set by the Minister of Environment to prevent harm to animals and plants in areas of public waters, 2014). By drawing a comparison between the above results, it was classified in Category 1. (a.i.: active ingredient)	FY2021	GHS Classification Guidance for the Japanese Government (FY2019 revised edition (Ver. 2.0))
12	Hazardous to the ozone layer	Classification not possible	- -	-	-	This substance is not listed in the Annexes to the Montreal Protocol.	FY2021	GHS Classification Guidance for the Japanese Government (FY2019 revised edition (Ver. 2.0))

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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