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CAS 548-80-1 Chromotrope 2B

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CAS 548-80-1 Chromotrope 2B

CAS 548-80-1 Chromotrope 2B
CAS 548-80-1 Chromotrope 2B CAS 548-80-1 Chromotrope 2B

Large Image :  CAS 548-80-1 Chromotrope 2B

Product Details:
Place of Origin: China
Brand Name: YunbangPharm
Certification: ISO9001
Model Number: YB137
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: 1kg/Bottle, 5-25kg/Drum
Delivery Time: 5-8 working days
Payment Terms: L/C, D/A, D/P, T/T, Western Union
Supply Ability: 10Ton/Month

CAS 548-80-1 Chromotrope 2B

Product Name: Chromotrope 2B Cas No: 548-80-1
Molecular Formula: C16H12N3NaO10S2 EINECS NO: 208-959-9
From: Crystalline Powder Colour: Dark Green To Dark Purple
Melting Point: 300 °C Colour Index (CI): 16575
High Light:

548-80-1 Chromotrope 2B


Chromotrope 2B Crystalline Powder


548-80-1 Biological Buffers

CAS 548-80-1 Chromotrope 2B

Hunan Yunbang Pharmaceutical Co., Ltd. (Yunbangpharm) located in Changsha High-tech Industrial Park, Hunan. It is a high-tech enterprise specializing in the research and development, production and sales of Pharmaceutical raw materials, Pharmaceutical intermediates(API) and Fine chemicals. Based in China, Yunbangpharm has been providing suitable solutions for many domestic,foreign pharmaceutical companies and traders. Excellent quality, good reputation and authentic price have won the praise of the majority of customers.
R&D strength is the company's core competitiveness.Yunbangpharm has maintains a good cooperation relationship with many Universities and Research institutes locally, which can quickly transform R&D results into industrial production.
Our goal : To achieve the integrated upgrade of Pharmaceutical intermediates, raw materials and high-end chemical products, adhere to "serving pharmaceutical companies, creating our brands" to provide customers with high-quality and low-cost pharmaceutical and chemical products, realizing Win-win cooperation and common development.

1:Can I get some samples before bulk order?
A: Most products provide free samples, but the shipping cost be paid by customers.
2: What's your MOQ?
A: We can have a discussion.
3: Which kind of payment terms do you accept?
A: PI will be sent first after confirmation of order,enclosed our bank information.Payment by T/T, Western Union,D/P, ETC.
4.How to place an order?
A: You can contact me through Trademanager, WhatsApp, Email and other contact methods, tell me the product and quantity you need, and then we will give you a quote.
5:How about your delivery time?
A: Generally, it will take 3 to 5 days after receiving your advance payment.
6:How do you treat quality complaint?
A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.

General description

Rose Bengal is the sodium salt of tetraiodotetrachlorouorescein, C20H2O5I4Cl4Na2. It is an anionic water-soluble xanthene dye.


Rose bengal has several microbilogical staining applications including:

  • Conn′s technique for bacteria in soil and Kreyberg′s stain for keratin and mucus

  • counterstaining hematoxylin

  • staining cellular inclusions, together with Bismark brown

Product Name: CHROMOTROPE 2B
Synonyms: 2,7-Naphthalenedisulfonicacid,4,5-dihydroxy-3-[(4-nitrophenyl)azo-]-,disodiumsalt;7-naphthalenedisulfonicacid,4,5-dihydroxy-3-[(4-nitrophenyl)azo]-disodium;AcidRed176(16575);Chromotropicacid2B;C.I.Acid Red 176;C.I.Mordant Black 93;Chromotrope Red 4B;Sodium 2-(p-nitrophenylazo)chromotropate
CAS: 548-80-1
MF: C16H12N3NaO10S2
MW: 493.39
EINECS: 208-959-9
Mol File: 548-80-1.mol
Melting point 300 °C
Colour Index 16575
form Crystalline Powder
color Dark green to dark purple
Merck 14,2240
BRN 4109733
CAS DataBase Reference 548-80-1(CAS DataBase Reference)
EPA Substance Registry System 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-nitrophenyl)azo]-, disodium salt (548-80-1)
CAS 548-80-1 Chromotrope 2B 1

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Contact Details
Hunan Yunbang Biotech Inc.

Contact Person: Maggie Ma

Tel: +0086 188 7414 9531

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