Basic (Cationic) Dyes
Auramine
Bright yellow cationic coloration for industrial applications.

Overview
Auramine is a bright yellow cationic dye commonly identified as Auramine O / Basic Yellow 2. It is suitable for selected industrial coloration applications where strong yellow coloration is required. Auramine O belongs to the diarylmethane class of cationic dyes and is notable for its strong fluorescence, a property that also makes related grades useful outside colouration as a biological stain.
Colour Reference
Appearance, dilution, and application

Appearance

Dilution

Application
Applications
Where it is used
- Paper and paper products
- Selected industrial coloration
- Cellulosic and specialty applications
Benefits
Why mills choose it
Bright yellow shade
Cationic dye chemistry
Strong visual coloration
Suitable for industrial color applications
Identity & Data
Technical data
Typical values. For a full technical datasheet or safety data sheet, get in touch.
- C.I. Name
- C.I. Basic Yellow 2
- C.I. Number
- 41000
- CAS Number
- 2465-27-2
- Molecular Weight
- 303.83
- Molecular Formula
- C17H22ClN3
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