Keywords

• High Quality 5001-72-9
• lowest price 5001-72-9
• Direct Red 31 in bulk supply

Quick Details

• ProName: High Quality 5001-72-9 lowest price Di...
• CasNo: 5001-72-9
• Molecular Formula: C32H21N5Na2O8S2
• Appearance: Red-brown powder
• Application: Mainly used for all kinds of cotton, h...
• DeliveryTime: Stocks
• PackAge: according to customers' requirements
• Port: Any port
• ProductionCapacity: 100 Metric Ton/Day
• Purity: 99%
• Storage: Room Temprature
• Transportation: By air(EMS or EUB or FedEx or TNT ect....
• LimitNum: 1 Gram

Superiority

High Quality 5001-72-9 lowest price Direct Red 31 in bulk supply

Red-brown powder. Water solubility is good, the aqueous solution is blue-red, and the addition of concentrated hydrochloric acid produces jujube red precipitate, and the addition of concentrated alkali turns orange brown. Soluble in ethylene glycol ether, ethanol-soluble, Red Orange, insoluble in other organic solvents. In concentrated sulfuric acid orange to brown, diluted to produce dark blue-red precipitation; In concentrated nitric acid Brown solution, there is precipitation. Insoluble in concentrated alkali; Jujube red in concentrated ammonia.

direct pink is the main red dye variety, which is widely used in dyeing and printing of cotton and viscose fabrics, as well as silk and viscose fabrics. It has good dyeing and levelness, and high dyeing rate. It can also be used for direct printing of dyed silk, vinylon fabric and silk fabric. When used in cotton, viscose and other fiber blended fabrics, silk is slightly lighter in color, wool and nylon can be dyed, diacetate fiber is stained, and polyester and acrylic are slightly stained.

Using J acid (2-amino-5-naphthol-7-sulfonic acid) and aniline as raw materials, first two molecules of J acid Condensation to obtain double J acid, then diazotiate the aniline, and then couple with double J acid to obtain the product. The finished product is salted out, filtered, dried and crushed..

Details

Established in 2010, located in Hangzhou Qinglan science park, lingruichem is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals tovarious industries.n our R&D centre. we have a staff of skilled and experienced research chemists. This has enabled us to meet the special reauirements of our customers and it has enabled us to provide quality products at competitive prices.

1. How can we guarantee quality

Always a pre-production sample before mass production;

Always final Inspection before shipment; 

2.What can you buy from us

Plant Extracts,Cosmetics Raw Materials,Vitamin Raw Materials,Pharmaceutical Raw Materials and Intermediates

3. Why should you buy from us not from other suppliers

Our company mainly devoted in producing pharmacetical intermediates , Vitamins , and health supplement , the quality and technical content can reach the advance level in China .Our products are sold well in China as well as in more than 20 countries.

Lingrui's credo is committed to your reliable business partner,reliable quality, competitive prices and superior service, lf you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future !