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CAS 596-01-0 Α-Naphtholphthalein

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CAS 596-01-0 Α-Naphtholphthalein

CAS 596-01-0 Α-Naphtholphthalein
CAS 596-01-0 Α-Naphtholphthalein CAS 596-01-0 Α-Naphtholphthalein

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Product Details:
Place of Origin: China
Brand Name: YunbangPharm
Certification: ISO9001
Model Number: YB199
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 596-01-0 Α-Naphtholphthalein

Product Name: α-Naphtholphthalein Cas No: 596-01-0
EINECS NO: 209-875-5 Molecular Formula: C28H18O4
Fusing Point: 238-240 °C(lit.) Melting Point: 496.21°C (rough Estimate)
Density: 1.1532 (rough Estimate) Refractive Index: 1.6400 (estimate)
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CAS 596-01-0 α-Naphtholphthalein



CAS 596-01-0 α-Naphtholphthalein


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.


Product Name: alpha-Naphtholphthalein
Synonyms: 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-1-naphthalenyl)-;à-naphtholphthalein;3,3-bis(4-hydroxy-1-naphthyl)phthalide;A-NAPHTHOLPHTHALEIN PRACTICAL GRADE;ALPHA-NAPHTHOLPHTHALEIN INDICATOR;1-NAPHTHOLPHTHALEIN, INDICATOR;ALPHA-NAPHTHOLPHTHALEIN(0.1% IN CA. 50% ETHANOL)[FOR PH DETERMINATION];alpha-Naphtholphthalein, indicator, pure
CAS: 596-01-0
MF: C28H18O4
MW: 418.44
EINECS: 209-875-5
Product Categories: Titration;Phthalein;Industrial/Fine Chemicals;N;Stains and Dyes;Stains&Dyes, A to;pharmacetical;Analytical Chemistry;Indicator (pH);pH Indicators;Indicators;pH Indicators - Solids
Mol File: 596-01-0.mol
Melting point 238-240 °C(lit.)
Boiling point 496.21°C (rough estimate)
density 1.1532 (rough estimate)
vapor density 14.44 (vs air)
refractive index 1.6400 (estimate)
storage temp. Store below +30°C.
solubility Solubility Practically insoluble in water; soluble in ethanol
pka 8.0, 8.2, 8.5(at 25℃)
form Powder
color Pink to beige or brown
Odor Characteristic odour
PH pH : 7.1~8.7
PH Range 7.1(brownish)-8.3(blue/green)
Water Solubility Soluble in ethanol. Insoluble in water.
λmax 648nm
Merck 14,6389
BRN 97816
CAS DataBase Reference 596-01-0(CAS DataBase Reference)
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Contact Details
Hunan Yunbang Biotech Inc.

Contact Person: Maggie Ma

Tel: +0086 188 7414 9531

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