High-purity 4,4′-Diaminostibene-2,2′-disulfonic acid,CAS:81-11-8 EINECS Code 201-325-2

short description:

High quality and best price chemicals product 4,4'-Diamino-2,2'-stilbenedisulfonic acid DSD ACID cas 81-11-8
4,4'-Diamino-2,2'-stilbenedisulfonic acid CAS 81-11-8
10 years factory supply 4 4'-Diamino-2 2'-stilbenedisulfonic acid with professional service CAS: 81-11-8
Packaging Details:5kg/drum, 10kg/drum,25kg/drum
Port:shanghai, tianjin,qingdao
Product Categories: Agrochemical Intermediates;Intermediates & Fine Chemicals;Dyestuff Intermediates;Flavor & Fragrance Intermediates;Gatiflo, Tequin and Zymar;Pharmaceutical intermediates
4,4'-Diamino-2,2'-stilbenedisulfonic acid CAS NO. 81-11-8 chemical properties
The usual one package of 4,4'-Diamino-2,2'-stilbenedisulfonic acid is 25kg/drum. But we could also subpackage it according to our customers' requirements.Such as 1kg/bag, 5kg/bag, 10kg/bag,etc.

Generally, the powder of 4,4'-Diamino-2,2'-stilbenedisulfonic acid will be packed in sealed plastic bags, and then be locked into the carton barrels or sealed in woven bags or craft paper bags. But we could also pack it with aluminium foil bags to provide more protection to the goods as our customers' required.

  • Other Names:: Diaminostilbene-2,2'-disulfonic acid
  • CAS No.:: 81-11-8
  • MF:: C14H14N2O6S2
  • EINECS No.:: 201-325-2
  • Type:: Pharmaceutical Intermediates
  • Purity:: 99%MIN
  • Description:: white powder
  • Product Detail

    Product Tags



    4,4'-Diamino-2,2'-stilbenedisulfonic acid powder could be delivered by courier, air or by sea.

    For 1~100kg, we recommend to ship it by courier,which is much faster and more convenient. What's more, . And the goods could be delived door by door.

    For more than 100kg, the goods could be shipped by air or by sea, and it is up to you. But we will provide perfect solutions for your reference.

    4,4'-Diamino-2,2'-stilbenedisulfonic acid 81-11-84,4'-Diamino-2,2'-stilbenedisulfonic acid 81-11-8

    If you would like to buy Diaminostilbene-2,2'-disulfonic acid or ask for a sample of 81-11-8, but you still have some questions about it. It doesn't matter. You can find the answer below or feel free to contact us for any other questions. Pls click here for more...4,4'-Diamino-2,2'-stilbenedisulfonic acid 81-11-8

    As a main manufactuer of 4,4'-Diamino-2,2'-stilbenedisulfonic acid/Diaminostilbene-2,2'-disulfonic acid, we have a short history, but we have the state of art equipment and R&D teams.

    Packing: 25kg/cardboard drums

    We can pack according to the customer request, otherwise will package as our factory.

    As the shipping we can use DHL/ EMS/ TNT/ FedEx/USPS or according to your request.


    By Courier By Air By Sea
    ≤50kg 50kg-500kg ≥500kgs
    3-7 Days 1-2week 2-3weeks
     Door to Door Airport to Airport Seaport to Seaport
     Easy to get products Need do Custom Clearance Need do Custom Clearance




    Quick Details

    Typical Properties



    Melting point

    300 °C


    1.4732 (rough estimate)

    refractive index

    1.6510 (estimate)

    storage temp.

    -20°C Freezer


    Crystalline Powder


    Cream to yellow-brown

    Water Solubility

    <0.1 g/100 mL at 23 ºC




    Item Moist products Dry products
    Appearance Light yellow paste Light yellow powder
    Gardner color ≤ 10 9
    Total Amino Value≥ 54% 95%
    Matter Insolubles≤ 0.05% 0.08%
    Benzyl Matter≤ 0.25% 0.25%
    Fe (ppm)≤ 50 60



    Shipping time by Sea (Just for reference)

    North America

    11~30 days North Africa 20~40 days Europe 22~45 days South-east Asia 7~10 days
    South America 25~35 days WestAfrica 30~60 days MiddleEast 15~30 days East Asia 2~3 days
    Middle America 20~35 days EestAfrica 23~30 days Ocenia 15~20 days South Asia 10~25 days



    Q1: Are manufacturer or trading company?

    A: We are manufacturer. You are welcome to visit our factory.

    Q2: How to contact with us?

    A: Click the  "Contact Supplier", send us message, you will get reply within 24 hours.

    Q3:Which kind of payment terms do you accept?

    A:  For bulk order, you can pay to our company's bank account.

    Q4:Can you give me a discount price?

    A: Sure,it depends on your quantity.

    Q5:How can I get a sample?

    A: You can discuss with us, we normally send sample by FEDEX, DHL,EMS.

    A few sample is free but you need to pay for the shipping cost.

    Q6: How to confirm the Product Quality before placing orders?

    A: You can get some sample, or we can send certificate of analysi or HPLC or NMR to you.

    Q7:How can I make payment safe?

    A: The whole transaction is under Alibaba's (Third party) inspection.

    Q8: Is it possible to custom the labels with our own design?

    A: Yes, just send us your artworks, you will get what you want.

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