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General Information
- General Information
  - General Information Data Description
    - CHRIP_ID C004-760-77A CAS RN 96-45-7
      
      Chemical Substance Name Imidazolidine-2-thione
      
      Molecular Formula C3H6N2S
      
      Molecular Weight 102
      
      SMILES S=C1NCCN1
      
      Structure
- Synonym
  - Synonym Data Description
    - Synonym 2-Imidazolidinethione
      
      2-Imidazoline-2-thiol
      
      2-Mercapto-2-imidazoline
      
      2-mercaptoimidazoline
      
      4,5-dihydro-1H-imidazole-2-thiol
      
      Ethylene thiourea
      
      Ethylenethiourea
      
      ETU
- Notes on CAS RN
  - Notes on CAS RN Data Description
    - Notes The CAS RN before replacement had been CAS RN 96-46-8.
- Nikkaji
  - Information of Japan Chemical Substance Dictionary (Nikkaji) Data Description
    - Nikkaji Number
      J3.970E
      Detail to J-GLOBAL

Laws and Regulations in Japan

Act on the Evaluation of Chemical Substances and Regulation of Their Manufacture, etc. (Chemical Substances Control Law ; CSCL)

Japan CSCL: Existing Chemical Substances Data Description Definition of the terms of Section 6 [PDF] Definition of the terms of Section 7 [PDF] Import Clearance Procedures[PDF] Notification of the Manufacturing Amount, etc[PDF]

MITI Number	5-423	Category	Section 5
Chemical Substance Name	2-Mercapto-2-imidazoline
Remarks	-
Details	to J-CHECK
Remarks to Existing Chemical Substances of Industrial Safety and Health Act	Chemicals have been notified in accordance with the provisions of Chemical Substances Control Law by June 29, 1979
Details to Existing Chemical Substances of Industrial Safety and Health Act	to MHLW site (in Japanese)

Japan CSCL: Type II Monitoring Chemical Substances (before amendment) Data Description Import Clearance Procedures[PDF] Notification of the Manufacturing Amount, etc[PDF]

Registration Number	38	Date of Designation in the Official Gazette	1989/03/22
MITI Number	5-423
Chemical Substance Name	2-Imidazoline-2-thiol or 2-imidazolidinethione
Remarks	-
Details	to J-CHECK

Japan METI: Biodegradation and Bioconcentration Results Data Description

Chemical Substance Name	2-mercaptoimidazoline
Judgement of Biodegradation	Not readily biodegradable	Judgement of Bioconcentration	Low bioconcentration
Test result of Bioconcentration	-	Test result of Partition Coefficient	-
Details	to J-CHECK

Japan MHLW: Toxicity Test Results Data Description
- volume Number 12
  
  Tested Chemical Substance Name 2-Imidazolidinethione
  
  Details to J-CHECK

Act on Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion of Improvements to the Management Thereof(PRTR-SDS Law)

Japan: PRTR-SDS Law (until March 2023) Data Description Outline PRTR Law (METI site) Analysis of PRTR data

Classification	I	Cabinet Order Number	1-42
Cabinet Order Name	2-Imidazolidinethione
Remarks	-
Basis of selection	Hazard Data (in Japanese)
Link	Releases Map (in Japanese) Atmospheric concentration Map (in Japanese)

Japan: PRTR-SDS Law (from April 2023) Data Description Outline PRTR Law (METI site)

JPSN(Japan PRTR-SDS Number)	42	Classification	II	Cabinet Order Number	2-006
Cabinet Order Name	2-Imidazolidinethione
Remarks	-
Basis of selection	Hazard Data (in Japanese)
Link	- -

Industrial Safety and Health Act (ISHA)

Japan ISHA: Chemical Substances Requiring Labeling and Delivery of Documents, etc. Data Description GHS compatible model label creation method (MH LW site : in Japanese) Risk assessment implementation support tool (MHLW site : in Japanese)
- Cabinet Order Number
  Attached table 9-56 of Cabinet order
  
  Cabinet Order Name 2-Imidazolidinethione
  
  Range of Application for Label (weight%) >=0.3
  
  Range of Application for SDS (weight%) >=0.1

Japan ISHA: Chemical substances that cause skin disorders, etc. and other chemical substances that must be handled with impermeable protective equipment etc. based on special chemical regulations. Data Description Target substances list(MHLW site: in japanese)

Substance Name	2-Imidazolidinethione (synonym: Ethylenethiourea)
Classification of Target Substances	Skin Irritating Hazardous Substances	Cutoff value(weight %)	1
Implementation	2024/4/1
Details	to the GHS Classification

Air Pollution Control Act

Japan Air Pollution Control Law Data Description Air & Transportation (MOE site)

Classification	Substances that may be classified as Hazardous Air Pollutants	Cabinet Order Number	242 of Central Environment Council 9th Report (Appendix 1)
Cabinet Order Name	2-Mercaptoimidazoline; Ethylenethiourea; 2-Imidazolidinethione

Laws and Regulations in Other countries

Association of South-East Asian Nations(ASEAN)
- The ASEAN-Japan Chemical Safety Database (AJCSD).: Laws and Regulations Data Description
  - Detail to AJCSD

European Union (EU)

EC Inventory Data Description
- EC Number
  202-506-9
  
  EC Name Imidazolidine-2-thione
  
  Description -
  
  Substance Infocard Infocard
  
  ECHA Name -

REACH: Substances of Very High Concern for Authorization (SVHC) Data Description

EC Number	202-506-9	Status	Candidate List
Substance Name	Imidazolidine-2-thione (2-imidazoline-2-thiol)
Reason for inclusion	Toxic for reproduction (Article 57c)
Date of inclusion	2013/12/16
Details	to ECHA site

EU: CLP Harmonised Classification Data Description To ECHA site
- Index Number 613-039-00-9 EC Number 202-506-9
  
  Chemical Name ethylene thiourea; imidazolidine-2-thione; 2-imidazoline-2-thiol
  
  Classification Repr. 1B / [Oral]Acute Tox. 4 *

US: Toxic Substances Control Act (TSCA)
- TSCA Inventory Data Description
  - TSCA Chemical Substance Name 2-Imidazolidinethione
    
    DEF -
    
    UVCB -
    
    FLAG -
    
    ACTIVITY ACTIVE

Korea

Korea: ARECs (K-REACH) / CCA; Hazardous Substance(s), Priority Control Substances Data Description
- Number
  2014-1-697
  
  Category Toxic Substance(s)
  
  Chemical Substance Name 2-Imidazolidinethione
  
  Range of Application (%)
  >=0.3
  
  Number
  70
  
  Category Priority Control Substances
  
  Chemical Substance Name Imidazolidine-2-thione

Korea: ARECs (K-REACH); Existing Chemical Substances Data Description

KE Number	KE-20941
Category	Existing Chemical Substances (Domestically distributed commercial purpose before February 2, 1991.)
Chemical Substance Name	2-Imidazolidinethione ; 2-Mercapto-2-imidazoline, Ethylene thiourea
Remarks	In the case of being hydrated, the resulting hydrate is also applicable.

Korea: ARECs (K-REACH); Others Data Description
- Number 86
  
  Category Phase-in substance(s) subject to registration (by June 30, 2018)
  
  Chemical Substance Name 2-Imidazolidinethione
  
  Note
  The registration grace period is until June 30, 2018

Taiwan
- Taiwan: TCCSCA/OSHA; Existing Chemical Substances Data Description
  - English Name Ethylene thiourea
    
    Chinese Name -

Chemical Hazard and Risk Information

GHS Classification Results
- NITE Japan-GHS Data Description
  - Edition version_1
    
    Chemical Substance Name 2-Imidazolidinethione; Ethylenethiourea
    
    Classification Result To the resut webpage To the Excel flie
- GHS Classification Results by the Japanese Government Data Description GHS Information
  - Year of implementation /renewal 2006 ID 91_H18_new
    
    Chemical Substance Name Ethylene Thiourea
    
    Classification Result To the resut webpage  To the Excel flie
    
    Year of implementation /renewal 2009 ID 21B3083
    
    Chemical Substance Name 2-Imidazolidinethione
    
    Classification Result To the resut webpage  To the Excel flie
    
    Year of implementation /renewal 2013 ID 25B0059
    
    Chemical Substance Name 2-Imidazolidinethione; Ethylenethiourea
    
    Classification Result To the resut webpage  To the Excel flie

MHLW:GHS Aligned Sample Label and SDS
- GHS Aligned Sample Label and SDS Data Description Information on GHS Aligned Sample Label and SDS (Workplace Safety Site)
  - Chemical Substance Name 2-Imidazolidinethione; Ethylenethiourea
    
    Sample Label to MHLW Website (in Japanese Only)
    
    Sample SDS to MHLW Website (in Japanese Only)

AIST: Relational Information System for Chemical Accidents Database(RISCAD)
- Relational Information System for Chemical Accidents Database(RISCAD) Data Description RISCAD (in Japanese)
  - Material ID 4937
    
    Name 2-imidazolidinethione
    
    Material Information to RISCAD

Hazard and Risk Assessment Reports etc. in Japan

Chemical Substances Hazard Assessment Report / Initial Risk Assessment Report Data Description Guidance for Initial Risk Assessment ver.1 (in Japanese) Guidance for Initial Risk Assessment ver.2 (in Japanese)

Report Number	No.147
Assessed Chemical Substance Name	2-Imidazolidinethione
Details	Hazard Assessment Report (in Japanese)	Date of publication/ renewal	2008/03
	Details Initial Risk Assessment Report (in Japanese)	Date of publication/ renewal	2008/12
	Details Summary of Initial Risk Assessment Report	Date of publication/ renewal	2010/05

Hazard Data Sheet for Chemical Substances Data Description
- Book Number
  2000-10
  Date of publication/ renewal 2002/10
  
  Assessed Chemical Substance Name 2-Imidazolidinethione
  
  Details Hazard Data Sheet (in Japanese)

Hazard and Risk Assessment Reports etc. in Other Countries
- International Chemical Safety Cards (ICSC) Data Description
  - ICSC Number
    1148
    
    ICSC Title 2-Mercaptoimidazoline
    
    Details to ILO site
- Environmental Health Criteria (EHC) Data Description
  - EHC Number
    78
    
    EHC Title Dithiocarbamate pesticides, ethylenethiourea, and propylenethiourea: A general introduction
    
    Details to IPCS site
- US EPA: Integrated Risk Information System (IRIS) Data Description
  - Chemical Substance Name Ethylene thiourea (ETU)
    
    Details to EPA site Last Revision 1991/05/01

Japan Society for Occupational Health (JSOH) Recommendation of Occupational Exposure Limits
- JSOH: Occupational Carcinogens Data Description
  - Substance Name Ethylene thiourea
    
    Carcinogenicity classification 2B
    
    Details -
    
    Year of proposal 1986
    
    Remarks -

Carcinogenicity Assessment

IARC: Carcinogenicity Assessment Data Description to IARC site

Volume	Sup 7, 79	Volume publication year	2001
Agent Name	Ethylenethiourea
Group	3
Details	Sup 7 Vol.79 - - -
Additional information	NB Overall evaluation downgraded to Group 3 with supporting evidence from other relevant data

US NTP: Carcinogenicity Assessment Data Description to NTP site
- Chemical Substance Name Ethylene Thiourea
  
  Category
  RAHC
  
  NAME OR SYNONYM
  Ethylene Thiourea
  
  Details to Substance Profile

Test Data and Reports

Japan METI: Biodegradation and Bioconcentration Results Data Description

Chemical Substance Name	2-mercaptoimidazoline
Judgement of Biodegradation	Not readily biodegradable	Judgement of Bioconcentration	Low bioconcentration
Test result of Bioconcentration	-	Test result of Partition Coefficient	-
Details	to J-CHECK

Japan MHLW: Toxicity Test Results Data Description
- volume Number 12
  
  Tested Chemical Substance Name 2-Imidazolidinethione
  
  Details to J-CHECK

US National Toxicology Program (NTP) : Long-Term Study Reports & Abstracts Data Description
- Report Number
  TR-388
  
  Report Title Toxicology and Carcinogenesis Studies of Ethylene Thiourea (CASRN 96-45-7) in F344 Rats and B6C3F1 Mice (Feed Studies)
  
  Abstract to NTP site Full Text to NTP site

CHRIP_ID	C004-760-77A	CAS RN	96-45-7
Chemical Substance Name	Imidazolidine-2-thione
Molecular Formula	C3H6N2S
Molecular Weight	102
SMILES	S=C1NCCN1
Structure

Synonym	2-Imidazolidinethione
	2-Imidazoline-2-thiol
	2-Mercapto-2-imidazoline
	2-mercaptoimidazoline
	4,5-dihydro-1H-imidazole-2-thiol
	Ethylene thiourea
	Ethylenethiourea
	ETU

volume Number	12
Tested Chemical Substance Name	2-Imidazolidinethione
Details	to J-CHECK

Cabinet Order Number	Attached table 9-56 of Cabinet order
Cabinet Order Name	2-Imidazolidinethione
Range of Application for Label (weight%)	>=0.3
Range of Application for SDS (weight%)	>=0.1

EC Number	202-506-9
EC Name	Imidazolidine-2-thione
Description	-
Substance Infocard	Infocard
ECHA Name	-

Index Number	613-039-00-9	EC Number	202-506-9
Chemical Name	ethylene thiourea; imidazolidine-2-thione; 2-imidazoline-2-thiol
Classification	Repr. 1B / [Oral]Acute Tox. 4 *

TSCA Chemical Substance Name	2-Imidazolidinethione
DEF	-
UVCB	-
FLAG	-
ACTIVITY	ACTIVE

Number	2014-1-697
Category	Toxic Substance(s)
Chemical Substance Name	2-Imidazolidinethione
Range of Application (%)	>=0.3

Number	70
Category	Priority Control Substances
Chemical Substance Name	Imidazolidine-2-thione

Number	86
Category	Phase-in substance(s) subject to registration (by June 30, 2018)
Chemical Substance Name	2-Imidazolidinethione
Note	The registration grace period is until June 30, 2018

Edition	version_1
Chemical Substance Name	2-Imidazolidinethione; Ethylenethiourea
Classification Result	To the resut webpage To the Excel flie

Year of implementation /renewal	2006	ID	91_H18_new
Chemical Substance Name	Ethylene Thiourea
Classification Result	To the resut webpage To the Excel flie

Year of implementation /renewal	2009	ID	21B3083
Chemical Substance Name	2-Imidazolidinethione
Classification Result	To the resut webpage To the Excel flie

Year of implementation /renewal	2013	ID	25B0059
Chemical Substance Name	2-Imidazolidinethione; Ethylenethiourea
Classification Result	To the resut webpage To the Excel flie

Chemical Substance Name	2-Imidazolidinethione; Ethylenethiourea
Sample Label	to MHLW Website (in Japanese Only)
Sample SDS	to MHLW Website (in Japanese Only)

Material ID	4937
Name	2-imidazolidinethione
Material Information	to RISCAD

Book Number	2000-10	Date of publication/ renewal	2002/10
Assessed Chemical Substance Name	2-Imidazolidinethione
Details	Hazard Data Sheet (in Japanese)

ICSC Number	1148
ICSC Title	2-Mercaptoimidazoline
Details	to ILO site

EHC Number	78
EHC Title	Dithiocarbamate pesticides, ethylenethiourea, and propylenethiourea: A general introduction
Details	to IPCS site

Chemical Substance Name	Ethylene thiourea (ETU)
Details	to EPA site	Last Revision	1991/05/01

Substance Name	Ethylene thiourea
Carcinogenicity classification	2B
Details	-
Year of proposal	1986
Remarks	-

Report Number	TR-388
Report Title	Toxicology and Carcinogenesis Studies of Ethylene Thiourea (CASRN 96-45-7) in F344 Rats and B6C3F1 Mice (Feed Studies)
Abstract	to NTP site	Full Text	to NTP site