Nigrosine

C.I.NO: Solvent Black 5

Alias: C.I. 50415; C.I. Solvent Black 5; Solvent Black 5; Nigrosine, alcohol soluble；Spirit Nigrosine; Oil Black

Physical and chemical properties: Appearance is a black uniform powder. It is insoluble in water, soluble in ethanol, pure benzene and toluene, and easily soluble in oleic acid and stearic acid. It has good heat resistance, blue-black in ethanol, blue to blue-black in concentrated sulfuric acid solution, and blue-black precipitation after dilution. After adding sodium hydroxide to its aqueous solution, it showed a brownish purple precipitate.

Index：

Appearance： black uniform powder；Color light The tinting strength is similar to the standard product, divided into 100±5 of the standard product.

Moisture,%： ≤4

Ash,%： ≤2.5

Fineness (residue content through mesh),%： <0.7

Uses: Mainly used for the coloring of plastics, adhesive tape powder, bakelite powder, shoe polish, printing ink and ink.

Properties

Aniline black is an important raw material for industrial chemical synthesis of dyes. For a long time, cotton printing and dyeing plants have directly dyed with aniline and oxidized on cotton fibers to obtain dark, firm and high-quality yuan color cloth. Aniline black is also used for cotton printing. Whether it is direct printing cloth or anti dyeing printing cloth, aniline has lower cost than dyes, black color, washing and sun resistance. It was once one of the main production processes in the 1950s.

CAS No.

11099-03-9

Formula

C8H19ClN2O

Molecular Mass

194.70200

Exact Mass

194.11900

PSA

35.50000

Logp

0.73120