Dsd Acid

Chemical name: 4,4-Diaminostilbene-2,2-disulfonic acid Chemical formula: C14H14N2O6S2 Molecular weight: 370.4 CAS NO.:81-11-8 Property: 1)Light yellow cream or powder, soluble in ethanol and ether; insoluble in water, easily soluble in alkaline solution. 2)Can be easily oxidized into red; has the property of aromatic acid or aromatic amine Quality index: Item Index (1)Appearance dry/wet light yellow powder/light yellow cream (2)Dry product total amino value(gross dry sample)% 95.0 (3)Degree of pigmentation(EOD) 0.12 (4)Content of alkali insolubles (gross cream )% 0.08 (5)Benzyl compound(gross sample)% 0.25 (6)Ash content% 2.2. Dry product: in 25kg woven bags or upon clients' request; wet product: in 40kg woven bag or upon clients' request.

Quality index: 1)DSD Acid Dry Type: Appearance-------------------------------------------------light yellow powder total amino value(gross dry sample)%---------------95%min Chromaticity------------------------------------------------9 Content of alkali insolubles (gross cream )%------0.08%max Benzyl compound(gross sample)%------------------0.25% Moisture%---------------------------------------------------2.0%max Iron pm-------------------------------------------------------80max 2)DSD Acid Wet Type: Appearance-------------------------------------------------light yellow cream total amino value(gross dry sample)%---------------70%min Chromaticity------------------------------------------------9 Content of alkali insolubles (gross cream )%------0.05%max Benzyl compound(gross sample)%------------------0.25% Iron pm-------------------------------------------------------80max Packing: dry product: in 25kg woven bags or upon clients' request; wet product: in 40kg woven bag or upon clients' request.12MT/20FCL.

Supplier: DSD acid, p-nitrotoluene-o-sulfonic acid, DNDS acid, ANSD acid

Supplier: Chemical products including dsd acid, p-nitrotolune-o-sulfonic acid, dnsd acid, sulfanilic acid, 2-amino-1, 4-benzenedisulfonic acid, o-toluidine and fluorescent whitening agent

Chemical name: 4,4-Dinitrostilbene-2,2-disulfonic acid Structural formula: Chemical formula: C14H10N2O10S2 Molecular weight: 430 CAS NO.:128-42-7 Quality index: Item Index (1)Appearanceorange powder (2)Binitro acid content(gross dry product)% 66.0 (3)binitrobenzyl compound (gross dry product )% 0.5 (4)Other organic impurities(gross dry product )% 2.0 (5)Inorganic salt(gross dry product )% 2.0 (6)Water insolubles(gross dry product)% 1.0 Main use: it is an intermediate of dyes. 25kg plastic woven bag.

Chemical name: p-nitrotoluene-o-sulfonic acid Structural formula: Chemical formula: C7H11NO7S Molecular weight: 253 CAS NO.:121-03-9 Quality index: Item Index (1)Appearance milk white crystal (2)Assay (Gross sample)% 80.0 (3)Moisture (Gross sample)% 5.0 (4)Free acid (Gross sample)% 1.0 (5)Insolubles(Gross sample% 0.1 Main use: it is an intermediate of dyes, can be used to manufacture Yellow R. 25kg plastic woven bag or upon clients' request.

Chemical Name: Sulfanilic acid Structural Formula: Chemical Formula: C6H7NO3S Molecular Weight: 173.18648 CAS NO.: 121-57-3 Product Index: Item Index 1. Appearance White to grey white powder 2. Purity (total amino value) 99.0% 3. Density 1.485g/cm3 4. Fusion Point 285C 5. Water-solubility 0.1 g/100 mL. Main use: for azo dyes manufacturing, also for agricultural chemicals to prevent wheat rust. 25KG plastic woven bag.

Chemical Name: 2-Amino-1,4-benzenedisulfonic acid Structural Formula: Chemical Formula: C6H5NO6S2 Molecular Weight: 251.2381 CAS NO.: 98-44-2 Quality Index: Item Index 1. Appearance Pink White Powder 2. Purity 98% 3. Water Insolubles 0.1%. Main Use: For dyes intermediates for the manufacturing of direct resistance to question the blue RGL, reactive turquoise bluse KGL, reactive brilliant yellow and reactive orange etc. 25KG plastic woven bag.

Supplier: 1, 4-cyclohexanedione, 99%, 1, 4-cyclohexanedione monoethylene ketal, 99%, 5-hydroxymethyl thiazole, 98%; 5-bromophthalide, 99%, barbituric acid, 99%, dimethyl succinyl succinate, 99%, dsd acid, diisopropyl succinate, 99%, dimethyl acetyl succinate, 99%, dimethyl succinate, 99%, diethyl succinate