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4,4-Diaminostilbene-2,2-disulfonic acid

Inquiry
  Post Date: Apr 04,2018
  Expiry Date: Oct 01,2018
  Detailed Description:

Chemical name: 4,4-Diaminostilbene-2,2-disulfonic acid

Trade name: DSD acid
Structural formula:

Chemical formula: C14H14N2O6S2
Molecular weight: 370.4
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)　　　　　　　　　　　　 ≤ 0.15
(4)Content of alkali insolubles (gross cream )%　　　≤ 0.08
(5)Benzyl compound(gross sample)%　　　　　　　≤ 0.25
(6)Ash content%　　　　　　　　　　　　　　　　≤ 2.5

2. Main use: In the manufacture of fluorescent brighteming agent、Chrysophenine G and Direct Yellow R, also as pesticides
3. Packing: dry product: in 25kg woven bags or upon clients' request; wet product: in 40kg woven bag or upon clients' request.



  Company: Yanshi Dongyuan Chemical Co.,Ltd.     [ China ]        
  Contact: Xing Jinxia
  Tel: +86-379-67435819 +86-137836791
  Fax: +86-379-67436819
  Email: dy@dongyuanchem.com
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