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General Information
- General Information
  - General Information Data Description
    - AJCSD_ID C004-719-36A CAS RN 461-58-5
      
      Chemical Substance Name Dicyandiamide
      
      Molecular Formula C2H4N4
      
      Molecular Weight 84
      
      SMILES N#CNC(N)=N
      
      Structure
- Synonym
  - Synonym Data Description
    - Synonym 1-cyanoguanidine
      
      cyanoguanidine
      
      Dicyanediamide
      
      Dicyanodiamide

Laws and Regulations

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]

MITI Number	2-1694	Category	Section 2
Chemical Substance Name	Dicyanodiamide
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)

Industrial Safety and Health Act (ISHA)

Japan ISHA: Existing Chemical Substances Data Description Existing Chemical Substances (MHLW site : in Japanese) Notification of New Chemical Substances, etc. (MHLW site : in Japanese)

Registration Number	3706
ISHA Number	2-(11)-16 ( 2-(11)-23 )
Date of Notification in the Official Gazette	19790630
Chemical Substance Name	1-Cyanoguanidine (dicyandiamide)
Details to Existing Chemical Substances of Industrial Safety and Health Act	to MHLW site (in Japanese)
Note	-

The Registration Number., ISHA Number and Date of Notification in the Official Gazette have been provided by the Ministry of Health, Labour and Welfare.

Poisonous and Deleterious Substances Control Act

Japan Poisonous and Deleterious Substances Control Act: Substances Excluded from Organic Cyanide Compounds Data Description

Classification	Deleterious Substances/Exception(Cabinet order)	Cabinet Order Number	Article 2-1-32-99 of Cabinet order (excluded from organic cyanide compounds)
Name	Dicyandiamide and preparations containing it

Water Pollution Prevention Act
- Japan Water Pollution Control Law Data Description Water / Soil / Ground Environment (MOE site)
  - Classification Harmful Substances Cabinet Order Number
    Article 2-2 of Cabinet order
    
    Cabinet Order Name Cyanide compounds
    
    Effluent Standards 1mg/L(CN)
    
    Purification Standards N.D.

Soil Contamination Countermeasures Act
- Japan Soil Contamination Countermeasures Act Data Description Water / Soil / Ground Environment (MOE site)
  - Classification Class 2 Cabinet Order Number
    Article 1-5 of Cabinet order
    
    Cabinet Order Name Cyanide compounds
    
    Soil Leachate Standard N.D.(CN)
    
    Soil Concentration Standard 50mg/kg(CN-)

Food Sanitation Act

Food Sanitation Act: Table 1 (1) in Appended table 1 of Specifications and Standards Notification; Base polymers (Plastics) Data Description The positive list system for food utensils, containers and packaging (MHLW)

Category	17. Cross-linking epoxypolymer
Number Name	1. Copolymer composed of one or more epoxypolymers(A.-H.) with polyamides(I.) or (J.) and/or cross-linking agents(K.); Polyamide; J. Polyamide composed of dimerized vegetable oils with following one or more amines; 2)cyanoguanidine
Food category (Ac\|Fa\|Mi\|Al\|Ot)	○\|○\|○\|○\|○	Max. Temp./Synth. Resin Gr.	III/1

Category	17. Cross-linking epoxypolymer
Number Name	1. Copolymer composed of one or more epoxypolymers(A.-H.) with polyamides(I.) or (J.) and/or cross-linking agents(K.); K. Cross-linking agent; 26)cyanoguanidine
Food category (Ac\|Fa\|Mi\|Al\|Ot)	○\|○\|○\|○\|○	Max. Temp./Synth. Resin Gr.	III/1

Category	28. Thermosetting polyurethane
Number Name	1. Copolymer composed of isocyanates(A.) with polyoles composed of monomer(B.); B. Monomer of polyol; 22)N-cyano-guanidine
Food category (Ac\|Fa\|Mi\|Al\|Ot)	○\|○\|○\|○\|○	Max. Temp./Synth. Resin Gr.	I/1
Requirements	When used in a non-food contact part, the maximum temperature: III.

Food Sanitation Act: Table 1 (2) in Appended table 1 of Specifications and Standards Notification; Base polymers (Coatings) Data Description The positive list system for food utensils, containers and packaging (MHLW)

Category	2. Aminopolymer
Number Name	3. Urea/formaldehyde copolymer,modified with following one or more amines; 3)cyanoguanidine
Food category (Ac\|Fa\|Mi\|Al\|Ot)	○\|○\|○\|○\|○	Max. Temp./Synth. Resin Gr.	III/1

Category	2. Aminopolymer
Number Name	4. Formaldehyde/melamine copolymer, modified with following one or more amines; 4)cyanoguanidine
Food category (Ac\|Fa\|Mi\|Al\|Ot)	○\|○\|○\|○\|○	Max. Temp./Synth. Resin Gr.	III/1

Category	6. Polyamide
Number Name	2. Copolymers composed of dimerized vegetable oils with following one or more amines; 2)cyanoguanidine
Food category (Ac\|Fa\|Mi\|Al\|Ot)	○\|○\|○\|○\|○	Max. Temp./Synth. Resin Gr.	III/1

Category	18. Cross-linking agent for coating
Number Name	25. cyanoguanidine
Food category (Ac\|Fa\|Mi\|Al\|Ot)	○\|○\|○\|○\|○	Max. Temp./Synth. Resin Gr.	III/1

Food Sanitation Act: Table 2 in Appended table 1 of Specifications and Standards Notification; Additives Data Description The positive list system for food utensils, containers and packaging (MHLW)
- Number
  656
  
  Name cyanoguanidine
  
  Use Limit by Synthetic Resin Group [%] 1;1 2;- 3;5 4;- 5;- 6;- 7;-

Food Sanitation Act: Table 1 in Appended table 1 of Revised Positive List of Food Apparatus and Containers, Packaging (Base materials)(From June 1, 2025) Data Description Revised Positive List of Food Apparatus and Containers, Packaging (CAA)

Substance Code	04-735	Polymer group	1
Base Materials	Cross-linking polymer of epoxy compound
Classification (Type, processing, etc.)	optional substance (including reaction products with essential monomers or epichlorohydrin)
Name	N-cyano-guanidine
Requirements	Molecular weight of the part composed only of the optional substances (excluding reaction products with essential monomers or epichlorohydrin): Less than 1,000

Substance Code	10-112	Polymer group	1
Base Materials	Polymer with ion exchange ability and/or adsorption ability
Classification (Type, processing, etc.)	essential monomer
Name	N-cyano-guanidine

Substance Code	11-730	Polymer group	1 or 3
Base Materials	Polymer mainly composed of urethane bonds
Classification (Type, processing, etc.)	optional substance
Name	N-cyano-guanidine
Requirements	Molecular weight of the part composed only of optional substance: Less than 1,000

Substance Code	21-4155	Polymer group	4 or 5
Base Materials	Polymer used for coating that involves chemical reaction during film formation
Classification (Type, processing, etc.)	organic compound ; organonitrogen compound
Name	N-cyano-guanidine

Food Sanitation Act: Table 2 in Appended table 1 of Revised Positive List of Food Apparatus and Containers, Packaging (Additives)(From June 1, 2025) Data Description Revised Positive List of Food Apparatus and Containers, Packaging (CAA)
- Serial No. 312
  
  Substance Name N-cyano-guanidine
  
  Use limit by Polymer Group Group 1; *, Group2; *, Group 3; *, Group 4; -, Group 5(>= 150 degC); *, Group 5(<150 degC); *

Philippines
- Toxic Substances and Hazardous and Nuclear Wastes Control Act
  - the Philippines: Toxic Substances and Hazardous and Nuclear Wastes Control Act (RA6969) Data Description
    - Category PICCS
      
      Substance name in English 1-CYANOGUANDINE
      
      Substance name in local language -
      
      Related Decree -
      
      Category PICCS
      
      Substance name in English Cyanoguanidine
      
      Substance name in local language -
      
      Related Decree -
      
      Category PICCS
      
      Substance name in English cyanoguanidine C2H4N4
      
      Substance name in local language -
      
      Related Decree -
      
      Category PICCS
      
      Substance name in English DICYAN DIAMIDE
      
      Substance name in local language -
      
      Related Decree -
      
      Category PICCS
      
      Substance name in English DICYANODIAMIDE
      
      Substance name in local language -
      
      Related Decree -
      
      Category PICCS
      
      Substance name in English GUANIDINE, 1-CYANO-
      
      Substance name in local language -
      
      Related Decree -
      
      Category PICCS
      
      Substance name in English Guanidine, cyano-
      
      Substance name in local language -
      
      Related Decree -

World Customs Organization
- International Convention on the Commodity Description and Coding Systems (HS Convention)
  - HS Code: Section VI “Products of the Chemical or Allied Industries" Data Description
    - Chapter 29 Chapter name Organic chemicals
      
      Heading 2926 Substance name (Heading) Nitrile-function compounds
      
      HS Code 2926.20 Substance Name 1-Cyanoguanidine (dicyandiamide)

Screening Assessment Information
- Japan
  - The Screening Assessment under the CSCL
    - The Screening Assessment under the CSCL for Human Health Data Description
      - Assessment Substance Dicyandiamide
        
        Hazard Class Out of Classification
        
        Assessment Year 2016
    - The Screening Assessment under the CSCL for the Environment Data Description
      - Assessment Substance Dicyandiamide
        
        Hazard Class 4
        
        Assessment Year 2017

AJCSD_ID	C004-719-36A	CAS RN	461-58-5
Chemical Substance Name	Dicyandiamide
Molecular Formula	C2H4N4
Molecular Weight	84
SMILES	N#CNC(N)=N
Structure

Synonym	1-cyanoguanidine
	cyanoguanidine
	Dicyanediamide
	Dicyanodiamide

Classification	Harmful Substances	Cabinet Order Number	Article 2-2 of Cabinet order
Cabinet Order Name	Cyanide compounds
Effluent Standards	1mg/L(CN)
Purification Standards	N.D.

Classification	Class 2	Cabinet Order Number	Article 1-5 of Cabinet order
Cabinet Order Name	Cyanide compounds
Soil Leachate Standard	N.D.(CN)
Soil Concentration Standard	50mg/kg(CN-)

Number	656
Name	cyanoguanidine
Use Limit by Synthetic Resin Group [%]	1;1 2;- 3;5 4;- 5;- 6;- 7;-

Serial No.	312
Substance Name	N-cyano-guanidine
Use limit by Polymer Group	Group 1; , Group2; , Group 3; , Group 4; -, Group 5(>= 150 degC); , Group 5(<150 degC); *

Category	PICCS
Substance name in English	1-CYANOGUANDINE
Substance name in local language	-
Related Decree	-

Chapter	29	Chapter name	Organic chemicals
Heading	2926	Substance name (Heading)	Nitrile-function compounds
HS Code	2926.20	Substance Name	1-Cyanoguanidine (dicyandiamide)

Assessment Substance	Dicyandiamide
Hazard Class	Out of Classification
Assessment Year	2016