Description
The main uses of phenolphthalein are: 1, pharmaceutical industry pharmaceutical raw materials: pharmaceutical laxative, can stimulate the intestinal wall, cause intestinal peristalsis to promote defecation. 2, for organic synthesis: mainly used for synthetic plastics, 3, for alkali indicator, non-aqueous titration indicator, chromatography reagent.
Phenolphthalein appears as white or yellowish-white to pale orange fine crystalline powder. Odorless. Aqueous solution is acidic. Colorless to pH 8.5; pink to deep-red above pH 9. Colorless in presence of large amounts of alkali. Tasteless.Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator. Phenolphthalein exerts laxative effects by stimulating the intestinal mucosa and constricting smooth muscles. However, phenolphthalein is no longer used as a laxative due to the suspected carcinogenicity of this compound.
Application and Function
1, the pharmaceutical raw materials in pharmaceutical industry: it is suitable for habitual stubborn constipation, including tablets, suppositories and other formulations.
2, it can be used for organic synthesis: mainly used in synthesizing plastics, especially in synthesizing the phthalazinone poly aryl ether ketone poly aryl ether ketone polymers. This kind of polymers, because of its excellent heat resistance, water resistance, corrosion resistance, heat aging resistance and good processability, fibers, coatings and composites made of it are widely used in the fields of electrical and electronic equipment, transportation and aerospace, atomic energy engineering .
3, used as acid and alkali indicator, non-aqueous solution titration indicator and chromatography analysis reagents.
| Melting point | 261-263 °C (lit.) |
| Boiling point | 417.49°C (rough estimate) |
| density | 1.27 g/cm3 at 32 °C |
| refractive index | 1.5400 (estimate) |
| Fp | 24 °C |
| storage temp. | no restrictions. |
| Colour Index | 764 |
| form | Solid |
| pka | 9.4(at 25ºC) |
| color | White to yellow-white |
Yujiang Chemical (Shandong) Co., Ltd. We are located in Shandong with convenient transportation access. We are a professional manufacturer and trader that is concerned with the research, development and production of Chemical, Minerals and Plastic raw materials, We committed to providing you with high-quality products and services.
We committed to providing you with high-quality products and services. We always implement the concept of customer value creation, for customers tailored products. Meet the needs of different customers, and continuously provide customers with solutions and technical problems. Further exploration and innovation, and excellence.Welcome and look forward to customers from all of the world to contact us for create a bright future with us together. 1.Q: Where is your company located? How can I visit there?
A: Our factory is located in Qingdao City, China.
2. Q: Can I get sample and how long will it take?
A: Yes. We can supply sample. And you need to pay for the sample and courier.About 2days after receiving the payment, we will send it out.
3. Q: What's the MOQ?
A: Our MOQ is one 20'container.
4. Q: Can I have my own customized product?
A: Yes. Your customized requirements for logo, design, package, your language manual etc. We are very welcome.
5. Q: Can I mix different models in one container?
A: Yes. Different models can be mixed in one container.
6. Q: What's the delivery time?
A: It will take about 10-15 days to finish an order. But the exact time is according to actual situation.
7. Q: What is the payment terms?
A: T/T, L/C and so on.(Contact with customer our service.)
8. Q: How does your factory carry out quality control?
A: We attach great importance to quality control.Every part of our products has its own QC.
9. How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
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