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

• 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