2022 Good Quality Direct Flavin 7gff 500% - Hot Sale Direct Fast Black VSF –

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2022 Good Quality Direct Flavin 7gff 500% - Hot Sale Direct Fast Black VSF – Detail:

Synonyms:C.I. Direct Black 22; 2-Naphthalenesulfonic acid, 6-(2-(2,4-diaminophenyl)diazenyl)-3-(2-(4-((4-(2-(7-(2-(2,4-diaminophenyl)diazenyl)-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl)phenyl)amino)-3-sulfophenyl)diazenyl)-4-hydroxy-, sodium salt (1:3); C.I. 35435; Direct Black 22; trisodium 6-[(E)-(2,4-diaminophenyl)diazenyl]-3-{(E)-[4-({4-[(E)-{7-[(E)-(2,4-diaminophenyl)diazenyl]-1-hydroxy-3-sulfonatonaphthalen-2-yl}diazenyl]phenyl}amino)-3-sulfonatophenyl]diazenyl}-4-hydroxynaphthalene-2-sulfonate

Appearance:Black powder.

Strength:100%

Solubility:The water solubility is good and the aqueous solution is purple black.Add concentrated lye to make it dark blue and red. It is purple black in concentrated sulfuric acid and produces black brown precipitation after dilution; It is a reddish brown solution in concentrated nitric acid and precipitates. When dyeing, the color light changes slightly in case of copper and iron ions.

Application:mainly used for dyeing and printing of cotton, viscose fabrics and wool viscose and brocade viscose blended fabrics. It is also used for dyeing leather and paper.
Quality guarantee period: 24 months.
Packing: 25kgs iron drum.
Storage:Store in a cool and ventilated room and prevent moisture and heat.

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We provide good power in high-quality and progress,merchandising,revenue and internet marketing and operation for 2022 Good Quality Direct Flavin 7gff 500% - Hot Sale Direct Fast Black VSF – , The product will supply to all over the world, such as: Haiti, Greenland, Kenya, Our Company policy is "quality first, to be better and stronger, sustainable development" . Our pursuit goals is "for society, customers, employees, partners and enterprises to seek reasonable benefit". We aspirate to do cooperate with all different the auto parts manufacturers, repair shop, auto peer , then create a beautiful future! Thank you for taking time to browse our website and we would welcome any suggestions you may have that can help us to improve our site.

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The customer service reprersentative explained very detailed, service attitude is very good, reply is very timely and comprehensive, a happy communication! We hope to have a opportunity to cooperate.