CAS 2303-01-7 Cresol Purple

• CAS No.: 2303-01-7
• Formula: C21h18o5s
• EINECS: 218-960-6
• Certification: ISO 9001
• Color: Dark Green
• Appearance: Liquid
• Model NO.: YBC261
• Type: Pharmaceutical Intermediates
• Quality: Refined
• Colour: Dark Green
• Samples: Available
• Certificates: ISO9001/SGS
• Package: 1g/5g/25g/100g/500g/10kg
• 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: IND
• Trademark: Yunbang OEM
• Origin: China

Product Description

CAS 2303-01-7 Cresol Purple 

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:	Cresol Purple
CAS:	2303-01-7
MF:	C21H18O5S
MW:	382.43
EINECS:	218-960-6
Product Categories:	Sulfonephthalein;Analytical Chemistry;Organics;Indicator (pH);pH Indicators
Mol File:	2303-01-7.mol

Cresol Purple Chemical Properties

Melting point	>250°C
Boiling point	577.5±50.0 °C(Predicted)
density	1.404±0.06 g/cm3(Predicted)
storage temp.	room temp
solubility	Very slightly soluble in water, ethanol; soluble in me thanol
pka	1.51, 8.32(at 25ºC)
form	Liquid
color	Dark green
PH Range	1.2 (red) - 2.8 (yellow) and 7.4 (yellow) - 9.0 (purple)
Water Solubility	Soluble in water and sodium hydr-oxide solution. Slightly soluble in alcohol.
λmax	579nm, 371nm
Merck	14,2577
BRN	350314
Stability:	Stable. Incompatible with strong oxidizing agents.
Major Application	Fuel cells, sensors, display device, falsification-proof security paper, inks, correction fluid, paints, detection of electrophilic gases, lubricants, cement products, packaging system, adhesive, cosmetics, food storage, determining glucose in dialysis solution, screening of cat diseases, detecting carbohydrates, oral hygiene products
EPA Substance Registry System	Phe-nol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl- (2303-01-7)

Safety Information

Safety Statements	24/25
WGK Germany	WGK 2 water endangering
TSCA	Yes
HS Code	2934 99 90

 

Cresol Purple Usage And Synthesis

Chemical Properties	green crystalline powder
Uses	Acid-base indicator.
Uses	m-Cre sol Purple acts as a pH indicator dye. It plays an important role in spectrophotometric pH measurements. It operates in the pH ranges 1.2 - 2.8 (red to yellow) and 7.4 - 9.0 (yellow to violet). Further, it is employed to stain epithelial cells and proteins.
Biochem/physiol Actions	m-Cre sol purple is a pH indicator. It changes from red (pH 1.2) to yellow (2.8) and yellow (7.4) to purple (9.0).

 

 

 

 

Detailed Photos