Recently we received many inquiries about nigrosine black dye. Maybe some client are not very clear for nigrosine black dye, here we make a simple introduction.

Nigrosine black has three types including water soluble acid nigrosine black CI acid black 2, oil soluble solvent black 7 and alcohol soluble solvent black 5.

Water soluble nigrosine black specification:

Classification:Strong acid dyes
Color light: similar to the standard
Shelf life: 36 months
Main functions: mainly used for leather, paper, silk and ink
CAS：8005-03-6
Dye index number: Acid Black 2
Appearance: black shiny granular material
Strength: 100 ± 3 (standard)
Moisture%: ≤ 6
Ash content: ≤ 1.7
Packing instructions 25kg composite bag
Brand: XCWY

Contact person: Miss Jessie Geng

Email:jessie@xcwychem.com

Mobilephone/Whatsapp: +86-13503270825