Rongalit C p, Discharge and Reducing Agent, Discharge Printing Agent, Vat Printing Chemical, Color and White Discharge With Vat Dyes, (Archroma)

Rongalit C p, Discharge and Reducing Agent, Discharge Printing Agent, Vat Printing Chemical, Color and White Discharge With Vat Dyes, (Archroma)

Rongalit® C p is a discharge and reducing agent developed by Archroma, primarily used in discharge printing, direct printing, and the two-phase process with vat dyes. It is suitable for discharge printing on dyed cellulosic fabrics and offers excellent solubility and stability under proper storage conditions.

Key Features:

• Appearance: White powder.

• Chemical Composition: Sulfinic acid derivative.

• Decomposition Temperature: Above 50°C, thermal decomposition may occur.

• pH: Approximately 10 (10% aqueous solution).

• Solubility: Approximately 600 g/l in water at 20°C. The dissolving process is endothermic.

• Storage Stability: Can be stored in sealed containers for up to 24 months under good conditions. Opened containers should be used quickly and resealed properly.

• Safety: Avoid moist conditions and storage with oxidizing agents or acids. The product is hygroscopic and should be stored in dry, acid-free conditions.

Applications:

1. Direct Printing with Vat Dyes:

   • Stock Thickening Recipe:

     • 550 g Thickener.

     • 30-50 g Glycerine.

     • 130 g Potash or 100 g Soda ash.

     • 130 g Rongalit® C p.

     • Water or thickening to make 1000 g.

   • Print Color Composition:

     • X g Vat dye (printing grade).

     • 650 g Stock thickening.

     • Water or thickening to make 1000 g.

   • Process: After printing and drying, the fabric is steamed for 8-12 minutes with saturated steam at 102°C (air-free).

2. Color Discharge Printing with Vat Dyes:

   • Suitable for dischargeable dyed cellulosic fibers.

   • The stock thickening used in direct printing can also be applied here. The amount of Rongalit® C p and alkali (potash or soda ash) may need to be increased depending on the dischargeability and color depth of the dyed ground.

3. White Discharge Printing:

   • Paste A (for easily dischargeable dyeings with substantive and reactive dyes):

     • 500 g Thickener.

     • 150 g Rongalit® C p.

     • 10 g Suitable discharge-resistant optical brightener.

     • Water or thickening to make 1000 g.

   • Paste B (for more difficult to discharge reactive dyes and naphthol combinations):

     • 500 g Thickener.

     • 200 g Rongalit® C p.

     • 10 g Suitable discharge-resistant optical brightener.

     • 40 g Caustic soda 38°Bé or soda ash.

     • Water or thickening to make 1000 g.

   • Process: After drying, the fabric is steamed for 8-10 minutes with saturated steam at 102°C (air-free).

4. Two-Phase Printing Process with Vat Dyes:

   • Application Rate: 100 g Rongalit® C p.

   • Process: The printed and dried fabrics are padded and steamed for 5-7 minutes with saturated or slightly superheated steam (110°C-115°C). The fabric is then rinsed, alkaline re-oxidized, and given a boiling soaping treatment.

Important Notes:

• Thorough After-Washing: Essential to ensure proper fixation and removal of residues.

• Storage: Store in dry, acid-free conditions. Avoid contact with oxidizing agents or acids.

• Safety Data: Refer to the Safety Data Sheet (SDS) for detailed toxicological and ecological information.

Documents

•  
• Betakim Rongalit C Certificates.pdf
• Betakim_Rongalit C p_SDS_1.pdf
• Rongalit C p_TDS_1.pdf
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