Color Developing Agent 3

Color Developing Agent 3
Names
	IUPAC name N-[2-(4-amino-N-ethyl-3-methylanilino)ethyl]methanesulfonamide;sulfuric acid
Identifiers
CAS Number	25646-71-3;
3D model (JSmol)	Interactive image;
ChemSpider	82689;
ECHA InfoCard	100.042.859
EC Number	247-161-5;
PubChem CID	91578;
UNII	KSG4Z13NE0;
CompTox Dashboard (EPA)	DTXSID2027882;
	InChI InChI=1S/2C12H21N3O2S.3H2O4S/c21-4-15(8-7-14-18(3,16)17)11-5-6-12(13)10(2)9-11;31-5(2,3)4/h25-6,9,14H,4,7-8,13H2,1-3H3;3(H2,1,2,3,4) Key: NPDFXFLCEDDWEG-UHFFFAOYSA-N;
	SMILES CCN(CCNS(=O)(=O)C)C1=CC(=C(C=C1)N)C.CCN(CCNS(=O)(=O)C)C1=CC(=C(C=C1)N)C.OS(=O)(=O)O.OS(=O)(=O)O.OS(=O)(=O)O;
Properties
Chemical formula	C24H48N6O16S5
Molar mass	836.97 g·mol−1
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H317, H410
Precautionary statements	P261, P264, P270, P272, P273, P280, P301+P312, P302+P352, P321, P330, P333+P313, P363, P391, P501
Related compounds
Related compounds	Color Developing Agent 1; Color Developing Agent 2; Color Developing Agent 4
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

The third in the series of color developing agents used in developing color films, commonly known as CD-3, is chemically known as N-[2-[(4-Amino-3-methylphenyl)ethylamino]ethyl]methanesulfonamide Sesquisulfate Monohydrate.^[1] In color development, after reducing a silver atom in a silver halide crystal, the oxidized developing agent combines with a color coupler to form a color dye molecule. CD-3 is used in many processes including VNF-1,^[2] ECN-2^[3] and the E-6 process.^[4]

References

↑ "Methanesulfonamide, N-[2-[(4-amino-3-methylphenyl)ethylamino]ethyl]-, sulfate (2:3)". U.S. National Center for Biotechnology Information. Retrieved 7 April 2019.
↑ "Processing EASTMAN EKTACHROME Color ReversalFilms, Module 11Process VNF-1 Specifications" (PDF). www.kodak.com. Eastman Kodak Company. Archived from the original (PDF) on 25 March 2020. Retrieved 22 January 2020.
↑ Processing KODAK Motion Picture Films, Module 7 Process ECN-2 Specifications (PDF). Eastman Kodak Company. 2020. p. 30. Retrieved 12 May 2026.
↑ "Material Safety Data Sheet KODAK PROFESSIONAL, Single-Use Chemistry Kit, Process E-6, Color Developer - Part B" (PDF). freestylephoto.com. Eastman Kodak Company. Retrieved 12 May 2026.

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[CD3-1] "Methanesulfonamide, N-[2-[(4-amino-3-methylphenyl)ethylamino]ethyl]-, sulfate (2:3)". U.S. National Center for Biotechnology Information. Retrieved 7 April 2019.

[VNF-1-2] "Processing EASTMAN EKTACHROME Color ReversalFilms, Module 11Process VNF-1 Specifications" (PDF). www.kodak.com. Eastman Kodak Company. Archived from the original (PDF) on 25 March 2020. Retrieved 22 January 2020.

[3] Processing KODAK Motion Picture Films, Module 7 Process ECN-2 Specifications (PDF). Eastman Kodak Company. 2020. p. 30. Retrieved 12 May 2026.

[4] "Material Safety Data Sheet KODAK PROFESSIONAL, Single-Use Chemistry Kit, Process E-6, Color Developer - Part B" (PDF). freestylephoto.com. Eastman Kodak Company. Retrieved 12 May 2026.

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Color Developing Agent 3

See also

References