Vat Red 1

Vat red 1 appearance is generally pink powder. It is insoluble in water, alcohol and acetone; soluble in xylene and tetralin, heated to sublimate to red gas. It is red in concentrated sulfuric acid, then green, and red after dilution. Also in red. The leuco body formed by the dye in the alkaline powder solution is yellow, and the acid powder solution is colorless.

Usage

• ‍Vat red 1 When used for cotton dyeing or dip dyeing, special method can also be used, and it can also be used in B. It can be reduced by dry cylinder and the drying time of dry cylinder is the most.10min, reduction temperature 75~80°C, dry cylinder stabilization time 15min (fine powder 10min).
• It leuco body to the cotton fiber is moderate, the leveling property is good. The hiding power of the dead cotton is poor. When the yarn is dyed, the dry cylinder bath ratio should be properly enlarged. Some, otherwise there will be crystal precipitation or agglomeration. The dyeing temperature should not be too low, otherwise it will be easy to produce color flowers. The dyeing effect is better when dyeing at 45~50°C. It has a slow oxidation rate. If air oxidation is used, the time should be extended appropriately. After the yarn is dyed, it should be properly dried and then oxidized in the air. It needs high temperature soap to help it fully color. In addition to dyeing and dip dyeing, it is also suitable for suspension padding.
• It is one of the important dyes in vat dyes for cotton printing. It is suitable for direct printing. It is often used as the main color, and it can also be used with the red color reduction GGN, the reduction brown RRD, the red lotus root RH, etc. If the pre-reduction method is used and the caustic soda is used as the alkali agent, the ribbon will be purple and dark, and the color obtained by the pre-reduction method will be bright and bright. When the printing paste is prepared, sodium carbonate or potassium carbonate is generally used as the alkali. Before the pulping, the dye and glycerin and alcohol should be placed in the ball mill for proper grinding. The printing paste should be used as needed, and the white powder should be added before the use, and the cold can be done. If the amount of white powder is increased, the increase is made. The amount of color is favorable. Oxidation is preferably sodium perborate or hydrogen peroxide, and if it is oxidized with dichromate, the color becomes dark.
• Vat red 1 is suitable for dyeing and printing of nylon asodium perbor
• Vat red 1 After printing and dyeing fabrics are finished with BHES resin, the color is yellow and dark.‍

Precautions

• It is a light brittle dye, so it is less used in summer fabrics, and is often used for printing and dyeing dark fabrics in winter.
• Color can be replaced by Reactive Red X-3B, its color is similar, but it is not resistant to chlorine bleaching, and the fastness is not as good as reducing peach R.
• When Vat pink R , it is necessary to use Taikoo oil as a wetting agent. It is not advisable to use penetrant BX or alcohol, otherwise the color is dim.
• And easy to produce chromatic aberration.
• The fine powder product is generally thick and must be ground separately before it can be used for padding or dyeing. There is foam during grinding.
• Will "rise", add defoamer can be improved, diffusion performance is also general.
• Vat red 1 should be protected from direct sunlight when dyeing, and should be protected from rapid ventilation in the workshop, otherwise the color will be dark.
• It should be stored in a dry, ventilated place, avoid direct sunlight, to prevent heat and moisture.
• It has been included in the list of banned dyes.

Technical Specifications

• ‍Product Name:Pink R(Vat Red 1)
• C.I. No.: 73360
• CAS No.: 2379-74-0
• Molecular Formula: C18H10Cl2O2S2
• Molecular Weight:393.31
• Shade: Bright blue light pink to red colourful blue-ray
• Relative name:PuriColor Red VRE1;Vat Pink 3B;Vat Pink R;‍

Package

25KG/DRUM, CARTON BOX, BAG