Direct Scarlet 4BS

Physical and Chemical Properties

Appearance: Light brown powder 

Shade: Similar to standard

Strength: 100%

Insolubility: ≤1%

Moisture: ≤7%

Fineness(80 Mesh Sieve Residue):≤10%

Soluble in water, forming a vivid red solution with a solubility of 30 g/L at 80°C. Soluble in ethanol, forming an orange solution. Insoluble in acetone. In concentrated sulfuric acid, it forms a deep red to dark red solution, which becomes light orange to brownish red when diluted. In dye solutions, it forms a wine-red precipitate with concentrated hydrochloric acid; when added to 10% sulfuric acid, it turns light blue; adding concentrated sodium hydroxide solution results in a red-orange color; adding 10% sodium carbonate solution causes no change. It is used for dyeing cellulose fibers, with excellent dye uptake efficiency, and exhibits maximum affinity at 80–100°C. It has excellent acid resistance. The color is deeper in copper ions; the color is the same in iron ions. 

Applications of Direct Scarlet 4BS

Direct Scarlet 4BS mainly used for dyeing cellulose fiber fabrics such as cotton and viscose, with good dye uptake, poor transfer ability, and salt sensitivity. It can also be used for direct printing and color matching with dyes such as yellow, orange, red, and brown. It can also be used for dyeing fabrics such as silk and wool. It can also be used to manufacture lake pigments for dyeing paper and pulp.

Packing of Direct Scarlet 4BS

Direct Scarlet 4BS packing in 25kg lron Drum/Bag, or as per the requirements of customers.

Storage & Transportationy: it must be stored dry & cool warehouse. Avoid to be contacted with oxidizing chemicals and combustible organic substances. Keep it away from direct sunlight, heat, sparks and open flames. Carefully handle the product and avoid damaging the package.