DSD Acid

Supply Ability:	10 Ton per Day
Shipping:	10-15days after payment
Payment Terms:	L/C, T/T(Bank Transfer)

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Min. Order:17 Metric Ton

Product Details

Place of Origin:	Tianjin in China
Packaging Details:	25kg/bag 400kg/bag or upon clients' request.

Specifications

1.Product name: DSD acid

2.Chemical name: 4,4-Diaminostilbene-2,2-disulfonic acid
3.Chemical formula: C₁₄H₁₄N₂O₆S₂
4.Molecular weight: 370.4
5.CAS No.:81-11-8

6.HS Code:29215900.90

7.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

8.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

9.Main use:DSD ACID use In the manufacture of fluorescent brighteming agent, Chrysophenine G and Direct Yellow R, also as pesticides

10.Packing: dry product: in 25kg woven bags or upon clients' request; wet product: in 40kg woven bag or upon clients' request.12MT/20FCL.

C.t: sales01 at tj-yakete dot com ninayang2005 at gmail dot com

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