Developing Agent CD-3 CAS No. 24567-76-8
High purity and low impurities — gives clean, reproducible color balance and stable photographic performance in repeated processing.
Good water solubility — dissolves readily in alkaline developer baths, easy to dose and control concentration.
Reliable dye-forming activity — reacts efficiently with yellow, magenta and cyan couplers to produce accurate, saturated colors.
Stable in storage — holds its developing power and color-rendering consistency when kept dry, sealed and away from light.
Key Physical & Chemical Properties
| Property | Specification |
|---|---|
| Chemical Name | 4-Amino-N-ethyl-N-(2-hydroxyethyl)-3-methylaniline |
| Appearance | White to light-grey crystalline solid (as sulfate) |
| Solubility | Soluble in water; sensitive to light/oxidation |
| Function | Color developer (chromogenic agent) |
| Grades | Photographic / reagent grade |
Key Applications
Color Developing Agent CD-3 is a specialized photographic chemical whose main use is in color photography processing, with growing secondary use in imaging and analytical fields.The product is applied in four main directions:
Color photographic paper — the standard developer for RA-4 process color paper used in photo labs, minilabs and commercial printing.
Color reversal film — a key component in E-6 process developer baths for producing slides and positive transparencies.
Color negative film — used in color negative development to produce accurate, well-balanced negatives for scanning and enlarging.
Imaging and analytical use — applied in medical imaging, industrial radiography and special photographic formulations where controlled dye formation is required.
