Luoyang Huasu Dyestuff Co., Ltd-Acid dyes,Direct dyes,Alkaline dyes

Product Category

-	Acid dyes

-	Direct dyes

-	Alkaline dyes

Intermediate

-	4-Aminoazobenzene-4'-sulfonic

-	4,4'-dihydroxy-7

-	7-anilino-4-hydroxynaphthalene-2-sulphonic acid

-	7-hydroxy-1,3-naphthalenedisulfonic acid, dipotassium salt

Products

4,4'-dihydroxy-7

4,4'-dihydroxy-7
CAS NO	134-47-4
Molecular formula	C₂₁H₁₆N₂O₉S₂
Molecular weight	504.4897
Structural formula
Properties	light yellow crystal; insoluble in organic solvent, lightly soluble in water
To use	as intermediate of azo dyes; for manufacturing of direct fast S, direct acid proof red 4BS
Content	≥ 90.0%
Purity (HPLC)	≥ 98.0%
Moisture	≤ 2.0%
Packaging	25kgs/woven bag

Add: Tianhu Town, Song County, Luoyang City, Henan Province
Tel: +86-379-66578111 Fax: +86-379-66578287
Sales Department: Manager Su 13721671000
E-mail: luoyanghuasu1@163.com
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