Colour Index:C.1.Sulfur Black 1(53185)
Standard:GB:2374-80
Original Name: Sulfur Black
Properties: Bright black flake-granulars.It is slightly insoluble in water. It is soluble in sodium sulfide with a green-black colour.
Composion:Dinitrochlorbenzne by hydrolysis then sulfurates with sodium polysulfide,and then oxidized.
Main characteristics:

Appearance:	Black flake-granulars
Strength:	200±3 of the standard
Shade:	Near to the standard
Alkali insolubles:	≤0.7%
Water content:	≤6%
Content of alkali insolubles:	≤0.5%

Main colouring force: Dye strength:6%

sun shine	wash-fastness		sweat		rub		iron
	colour change	stained colour	colour change	stained change	dry	wet
6	3-4	4	4	4-5	2-3	1-2	4

Main use: For dyeing on cotton fabrics, fibre fabrics and blended fabrics of cotton and fibre.
Check method: Check the dyeing strength and shade.
    (1) Based on GB2374-80 are the specification and density of the chemicals, the compounding of the dyestuff, the specification of the fibres and the general conditions of dyeing.
    (2)The dye strength is 1.5%. Dyeing with 42s double heads of fine-blenching cotton yarn.
Package: In the sealed plastics-lined iron drums of 50kg net each or plastic woven bag.
Storage and transportation: Keep at a dry place with dampproof.