thedirtyspork.com-97碰碰碰AV公开视频av,夜夜高潮夜夜爽高清视频一,2022年澳门正版资料大全完整版,中文无码在线不卡手机av

C.I.No: C.I. Solvent Black 7

Alias: C.I. Solvent Black 7; Oil soluble nigrosine; Oil Soluble Anilline Black

Physical and chemical properties: Appearance is a black uniform powder. Insoluble in water, soluble in oleic acid and stearic acid. It is blue-black in ethanol solution, blue to blue-black in concentrated sulfuric acid, blue-black precipitate after dilution, and blue to blue-black in concentrated nitric acid. Both acid and alkali resistance and light resistance are good.

Index
Appearance Black uniform powder
Color light similar to the standard product, divided into 100±5
Moisture of the standard product ,% ≤3
Ash,% ≤2
Fineness (residue content through the mesh),% ≤0.5

Uses: Mainly used for the coloring of high-grade insulating bakelite, carbon paper, shoe polish, rubber, plastic, ink, etc.