China (Mainland)
Sulphur Black/Sulfur Black BR 200% 240% 501 521 522 588
Sample available upon request only
Sulphur Black BR Specification
Dyes name
Sulphur Black BR
Item
Quality
200%,220%
Appearance
Black granule
Color
Same as Standard
Strength
200%,220%
Moisture
less than2.9%
Content of sodium sulfide-insoluble matter
less than 0.6%
Free sulphur
0.31%
Degree of fineness
(screening hangover content by 80 um),%
less than3%
Application
Mainly used dyeing on cotton, also used dyeing on cambric and leather,Sulfur dyes are the most commonly used dyes manufactured for cotton in terms of volume. They are cheap, generally have good wash-fastness and are easy to apply. The dyes are absorbed by cotton from a bath containing sodium sulfide or sodium hydrosulfite and are made insoluble within the fiber by oxidation. During this process these dyes form complex larger molecules which is the basis of their good wash-fastness.