Vat Yellow GCN（Vat Yellow 2）

1. Product Overview

Vat Yellow GCN is a bright yellow vat dye with excellent wash and light fastness, widely applied in cotton, viscose, and blended fabrics.

• CI Name & No.: Vat Yellow 2

• CAS No.: 129-15-7

• Category: Vat dye

• Appearance: Yellow powder

• Shade: Brilliant yellow with good levelness

• Key Features: High fastness, strong build-up, suitable for deep yellow and green shades in textile dyeing

• Markets: Cotton dyeing, viscose, blends, and printing industries

2. Technical Specifications

3. Performance & Fastness

• Wash fastness: 4–5 (ISO 105-C10)

• Light fastness: 6–7 (ISO 105-B02)

• Rubbing fastness: Dry 4 / Wet 3–4 (ISO 105-X12)

• Chlorine resistance: Good for vat dyes

• Build-up: Strong, suitable for medium to deep yellow shades

   Recommended Dyeing Conditions

• Medium: Alkaline vatting process

• Reducing agent: Sodium dithionite (Na₂S₂O₄)

• Temperature: 60–80 °C

• Oxidation: Air or hydrogen peroxide, followed by soaping

4. Applications

• Cotton fabrics — yarn dyeing, woven & knitted cotton

• Viscose & rayon — level dyeing with bright shade

• Blended textiles — cotton/polyester, cotton/linen, cotton/viscose

• Workwear & uniforms — strong fastness against washing and sunlight

• Textile printing — widely used in resist & discharge printing

  
  

5. Quality & Compliance

• COA provided with each batch (Shade, Strength, Moisture, Insolubles, pH)

• APEO-free, complies with EU restricted azo dye requirements

• Heavy metals & formaldehyde controlled within international limits

• SDS available (English; other languages on request)

6. Packaging & Logistics

• Standard: 25 kg P.W. bag / fiber drum / carton box

• Bulk: 500–1000 kg jumbo bags available

• MOQ: 100 kg (trial order) / 1 MT (bulk)

• Delivery: 7–10 days from warehouse

• Shelf life: 24 months (dry, ventilated storage)

• Ports: Tianjin / Qingdao / Shanghai

7. Samples & Support

• Free laboratory samples (10–50 g) available

• Courier freight to be paid by customer (DHL/UPS account)

• Technical support: shade matching & process optimization

8. Related Products

• Chrysophenine GX / Direct Yellow G (Direct Yellow 12) – bright yellow direct dye for cotton, viscose, and paper

• Acid Gold Yellow G (Acid Yellow 36) – acid yellow dye for wool, silk, nylon, and leather

• Direct Yellow R (Direct Yellow 11) – direct yellow dye for cotton & regenerated cellulose fabrics