SULFUR DYESTUFF

Sulfur dyestuffs offer technical advantages in dyeing display improved fastness properties and are available at favorable prices. The fastness properties of sulfur dyestuff to light, washing, water and perspiration are ranked between direct dyestuff and vat class dyestuff. Those sulfur dyestuffs are generally employed for dyeing full shades of blacks, blues, dark greens, browns, yellows, etc.

These sulfur dyestuffs are insoluble in water directly, dyeing is generally carried out after the dyes are reduced and dissolved with sodium sulfide. Dyeing with sulfur dyestuff can be accomplished with a high degree not only on cotton, viscose rayon, but also on nylon, vinyl, and other dynthetic fiber.

Hebei Wuyi Dyestuff Chemical Plant welcomes foreign firms all over the world to develop trade with us about sulfur dyes.

Specification of Sulfur Dyestuff

Product Name Color Sample C.I.Sulfur No. Fastness
Light Washing Rubbing
Dry Wet
Yellow Brown 6G dyestuff-1.JPG (3831 bytes) C.I.O.1 3-4 3-4 4 2-3
Blue BRN dyestuff-2.JPG (2606 bytes) C.I.B.7 5-6 2-3 4 2
Light Green dyestuff-3.JPG (3263 bytes) C.I.G.14 6-7 3 4-5 2-3
Black BR 200% dyestuff-4.JPG (2604 bytes) C.I.BI.1 (53186) 6-7 4-5 4 2

Dyeing of Sulfur Dyestuff ( Cotton )

1.Dyeing recipe and condition of sulphur dyestuffs
Dye, % x
50% Na2 S 100~250% x
Na2SO4 20%
Na2CO3 2%
Reducing temp. 100กใ C
Dyeing temp. 55~95กใ C

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2. Oxidizing recipe and condition of sulphur dyestuff
Oxidizing method Air NaBO3 K2Cr2O7 30% Acetic acid Tem,. กใ C Time, min
1 V - - - 10~25 10
2 - 3g/L - - 50 15
3 - - 1% 0.7% 50 15

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3. Dyeing procedure of sulfur dyestuffs:

                         Reducing --Dyeing--Oxidizing--Rinsing--Soaping--Rinsing--Drying.

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Hebei Wuyi Dyestuff Chemical Plant

Attn: Mr.Sun Shusheng

 dyestuff-1.JPG (10282 bytes)

Add: No. 7 Fuxing Road, Qingliangdian, Wuyi County, Hebei Province, China
P.C.: 053411
Tel: +86-318-5815227
Fax: +86-318-5816458
E-mail: info@chinadyestuffs.com