HANGZHOU EMPEROR PIGMENT CO.,LTD.

DIRECT BLACK 19

• Category :

  Dyestuffs and Pigments/Direct Dyes

• Synonyms :

  C.I. 35255;C.I. Direct Black 19;C.I. Direct Black 19 (VAN);C.I. Direct Black 19, disodium salt;Direct Fast Black G;C.I.Direct Black 19;disodium (3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonate;(3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid;Direct Black G;

• CAS NO :

  6428-31-5

• EC NO :

  229-208-1

• Molecular Formula :

  C₃₄H₂₇N₁₃Na₂S₂O₇

• Molecular Weight :

  839.77

• Main Specifications :

• InChI :

  InChI=1/C34H29N13O7S2.2Na/c35-18-1-11-26(24(37)15-18)44-40-20-3-7-22(8-4-20)42-46-32-28(55(49,50)51)13-17-14-29(56(52,53)54)33(34(48)30(17)31(32)39)47-43-23-9-5-21(6-10-23)41-45-27-12-2-19(36)16-25(27)38;;/h1-16,48H,35-39H2,(H,49,50,51)(H,52,53,54);;/q;2*+1/p-2/b44-40+,45-41+,46-42+,47-43+;;

• Packing :

  25kg bag

• Product description :

  DIRECT BLACK 19 Our grade name: DIRECT BLACK VB COUNTERTYPE: RIFAZOL BLACK GR, Sumilight Black G DIRECT BLACK 19 C. I. 35255 CAS No: 6428-31-5 EINECS: 229-208-1 Specification APPEARANCE: BLACK POWDER HEAT RESISTANCE: 300 C min Dyeing depth: 4% Fastness-Light (Xenon): 4 Fastness-Washing: 4-5 Rubbing-Dry: 4 Rubbing-Wet: 2 SPECIFIC SURFACE: 41 m2/g DENSITY: 1.59 g/cm3 RESIDUE ON 80 MESH: 5.0% max WATER SOLUBLE: 1.0% max VOLATITE 105 C: 1.0% max TINTING STRENGTH: 100%-200% HS CODE: 32041400 Product features: 1. Good solubility and leveling property. 2. Excellent black dye with little discoloration in the after treatment. 3. Applicable for pad dyeing and dye with hydrogen peroxide. 4. Medium color fastness; Applicable under high temperature and pressure. Application: 1. Dyeing for cotton, viscose, polyester/cotton, wool/viscose and printing of pure silk. 2. Dyeing for leather. 3. Dyeing for black writing paper, shoe paper board and corrugated paper, with high exhaust rate of dyeing and good light fastness Packing: 25kg net each kraft carton or iron drum, 500kg net PP/PE bag, or special package as per the customer's requirements. Other related direct dyes: Direct Black 1, 9, 17, 19, 22, 29, 38, 56, 80, 168, 173, 239 Direct Green 1, 6 Direct Red 13, 18, 23, 28, 31, 80, 81, 83, 224, 227, 239, 243, 254 Direct Blue 2, 6, 15, 67, 70, 71, 75, 78, 80, 86, 106, 108, 151, 199, 200, 201, 274, 281, 297, 301 Direct Brown 1, 2, 44, 95, 115, 116, 210, 223, 227 Direct Yellow 4, 11, 12, 27, 36, 44, 50, 86, 106, 131, 132, 142, 147, 161 Direct Orange 2, 7, 15, 26, 39, 80, 102, 118 Direct Violet 9, 35, 66

• Uses :

  leather,cotton

• Molecular Structure :