CD-3 Color Developer

CD-3 Color Developer – High-Quality Developing Agent for Color Photography

Basic Information

• Product Name: Color Revealer CD-3

• Chemical Name: 4-(N-Ethyl-N-2-methanesulfonylethyl)-2-methylphenylenediamine

• CAS Number: 24567-76-8

• Molecular Formula: C₁₂H₂₁N₃O₂S·1.5H₂SO₄·H₂O (as sulfate salt)

• Appearance: White to off-white crystalline powder

• Solubility: Soluble in water; slightly soluble in organic solvents

Overview
CD-3 is a well-established color developing agent belonging to the phenylenediamine class. It is the third in a series of widely known color developers (CD-1 through CD-4) used in photographic processing. CD-3 is primarily employed in the development of color films and color papers, where it reacts with oxidized color couplers to form dye images.

Applications

• Color film processing: Used in C-41 and similar processes for developing color negative films.

• Color paper processing: Employed in RA-4 and equivalent processes for color photographic papers.

• Photographic chemistry: As a key component in color developer solutions, providing consistent and reliable color reproduction.

• Research and development: Used in photographic and imaging laboratories for experimental formulations.

Key Properties

• High purity ensures consistent photographic performance.

• Good stability in solution when protected from oxidation.

• Provides balanced color formation with good contrast and neutrality.

• Compatible with standard photographic processing equipment and chemistry.

Handling and Storage

• Store in a cool, dry, well-ventilated area, away from light and moisture.

• Keep containers tightly sealed to prevent oxidation and contamination.

• Use appropriate personal protective equipment (gloves, safety goggles, dust mask) when handling.

• Avoid inhalation of dust and contact with skin and eyes.

Packaging
Available in 100 g, 500 g, 1 kg, and 5 kg containers. Custom packaging upon request.

Quality Assurance
Each batch is tested for purity (by HPLC), melting point, and photographic activity to ensure consistent performance in color development processes.