DSD Acid CAS#81-11-8

DSD Acid CAS#81-11-8
DSD Acid CAS#81-11-8-5
DSD Acid CAS#81-11-8-4
DSD Acid CAS#81-11-8-3
DSD Acid CAS#81-11-8-2
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  • Appearance: Light yellow powder
  • Assay: 95.0% min
  • Packaging: 25kg/bag
  • Sample: Available
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Quality Control of DSD Acid

Quality Control & MSDS
Chemical Structure
Packing of Bretazenil
DSD Acid CAS#81-11-8-5
DSD Acid CAS#81-11-8-4
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Description of DSD Acid

4,4′-Diamino-2,2′-stilbenedisulfonic acid is the organic compound with the formula (H2NC6H3SO3H)2C2H2. It is a white, water-soluble solid. Structurally, it is a derivative of trans-stilbene, containing amino and sulfonic acid functional groups on each of the two phenyl rings. The compound is a popular optical brightener for use in laundry detergents. It is produced by reduction of 4,4′-dinitro-2,2′-stilbenedisulfonic acid with iron powder.

Basic Info of DSD Acid

Basic Info

Chemical Name

4,4′-Diamino-2,2′-stilbenedisulfonic acid

Synonyms

4,4′-diamino-stilbene-2,2′-disulfonic acid;tinopalbhs;DSD ACID;4,4‘-Diamino-2,2‘-stilbenedisulfonic acid;DASDA;Expand

CAS No.

81-11-8

Molecular Formula

C14H14N2O6S2

Molecular Weight

370.40100

PSA

177.54000

LogP

4.83880

 

Safety Info

RTECS

WJ6603000

Safety Statements

S22-S26-S36/37/39-S45

HS Code

2921420090

RIDADR

UN 2583

Risk Statements

R34

Hazard Codes

C

 

Properties

Appearance & Physical State

White to Yellowish Crystalline Powder

Density

1.662 g/cm3

Melting Point

>325ºC

Refractive Index

1.726

Stability

Stable. Combustible. Incompatible with iron, strong oxidizing agents.

Storage Condition

-20ºC Freezer

 

Numbering system

MDL number

MFCD00024946

 

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What is DSD Acid?

Part I: Introduction

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is DSD Acid which has developed particularly rapidly in recent years. Do you know about DSD Acid?

The official answer: DSD acid is a chemical substance with the appearance of a light brownish-yellow powder that deepens to a teal color under light. Also known as 4,4′-Diamino-2,2′-stilbenedisulfonic acid, its sodium salt is a common intermediate dye used in dyestuffs.

What’s the application of DSD Acid?

Part 2: In-depth development

Used in the production of fluorescent brighteners, direct freeze yellow G and direct yellow R, and as an insecticide.

Intermediates such as dyes and fluorescent brighteners.

Produced by the sulfonation of p-nitrotoluene to p-nitrotoluene o-sulfonic acid, followed by catalytic oxidation to DSD acid, and then by reduction. 

Conclusion

Sincere to the customer and in good faith of quality is our forever followed motto. It’s the basement to be a human and do business. We take all responsibility for our products and service sincerely. We are a company integrating R&D, production, and sales. The design, research, and development of pharmaceutical intermediates including more than 330 kinds of pharmaceutical intermediates such as Anti-infectives, Cardiovascular and Cerebrovascular Systems, Digestive System, Santi-tumor, Nervous System, Geriatric Drugs, and Gynecological Drugs. At the same time, we have more than 4,000 factories in strategic cooperation with nearly 50,000 chemical products, so we can provide you with a one-stop purchasing service, which greatly saves customers’ procurement costs and time.

Hello, I’m Pew Ni, the chemical products one-stop solution expert.

Hi, I‘m Peter Ni, the founder of Sincere-Chem, I’ve been running a company in China that exporting chemicals, pharmaceuticals, and intermediates for over 70 countries now. And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.

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