CAS 63451-35-4 Hydroxynaphthol Blue

• Customization: Available
• CAS No.: 63451-35-4
• Formula: C20h15n2nao11s3
• Model NO.: YBC220
• EINECS: 264-197-7
• Certification: ISO 9001
• Color: Dark Gray
• Appearance: Solid
• Type: Pharmaceutical Intermediates
• Quality: Refined
• Colour: Dark Gray
• Samples: Available
• Certificates: ISO9001/SGS
• Package: 1g/5g/25g/100g/500g/1kg
• Stocks: in Stock
• Lead Time: 5-7 Working Days
• Shelf Life: 2-3 Years
• Site Audit: Available
• Transport: Air/Express/Sea
• MOQ: 10g
• Transport Package: Drum/Bottle/Bags
• Specification: AR
• Trademark: Yunbang OEM
• Origin: China

Product Description

CAS 63451-35-4 Hydroxynaphthol Blue

Company Informations

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.

The company adheres to the corporate tenet of "We do not produce medicines, but help pharmaceutical companies make good medicines".

We can provide customers with customized processing, research and development services;
We can develop high-end Pharmaceutical and chemical products with high technical difficulties,high barriers and unique production processes;
We can provide 100 grams Grade, kilograms, and hundred kilograms of raw material pharmaceutical intermediates and other products.
We can perform -100°C to 300°C reaction.

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.
 

FAQ

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.
 

Our Advantages

1. 90days quality guarantee for exchange.

2. For each batch order extracts, we will attach a factory Inspection Report with the goods delivery , including the BatchNo/ Date/ Test index ects; also will keep the archived extracts to ensure received by customers are the same each time.

3. Our team of experienced professionals are available online 24 hours a day to answer any questions and provide guidance on product usage and maintenance.


 

Product analysis

 

Product Name:	HYDROXYNAPHTHOL BLUE
Synonyms:	7-naphthalenedisulfonicacid,3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]-trisodiumsalt;HYDROXYNAPHTHOL BLUE;HYDROXYNAPHTHOL BLUE INDICATOR;HYDROXYNAPHTHOL BLUE TRISODIUM SALT;CALVER(R) 2 CALCIUM INDICATOR;3-HYDROXY-4-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO)NAPHTHALENE-2,7-DISULFONIC ACID TRISODIUM SALT;1-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO)-2-NAPHTHOL-3,6-DISULFONIC ACID TRISODIUM SALT;1-(2-NAPHTHOLAZO-3,6-DISULFONIC ACID)-2-NAPHTHOL-4-SULFONIC ACID DISODIUM SALT
CAS:	63451-35-4
MF:	C20H15N2NaO11S3
MW:	578.51
EINECS:	264-197-7
Product Categories:	Organics
Mol File:	63451-35-4.mol

HYDROXYNAPHTHOL BLUE Chemical Properties

storage temp.	Store at +15°C to +30°C.
solubility	340g/l
form	Solid
color	Dark Gray
PH	2-3 (10g/l, H2O, 20ºC)
Stability:	Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference	63451-35-4(CAS DataBase Reference)
EPA Substance Registry System	2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]-, trisodium salt (63451-35-4)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
WGK Germany	WGK 3 highly water endangering
HS Code	2927 00 00

MSDS Information

 

HYDROXYNAPHTHOL BLUE Usage And Synthesis

Chemical Properties	blue crystalline powder
Uses	Hydroxynapthol Blue is a pharmaceutical dye used in colorimetric analyses.
Purification Methods	The crude material is treated with hot EtOH to remove soluble impurities, then dissolve in 20% aqueous MeOH and chromatographed on a cellulose powder column with propanol/EtOH/water (5:5:4) as eluent. The upper of three zones was eluted to give the pure dye which is precipitated as the monosodium salt trihydrate by adding conc HCl to the concentrated eluate [Ito & Ueno Analyst 95 583 1970]. It can be converted to the trisodium salt wih the calculated amount of alkali. Indigocarmine (2[1,3-dihydro-3-oxo-5-sulfo-2H -indol-2-ylidene]-2,3-dihydro-3-oxo-1H -

 

 

 

 

 

 

Detailed Photos