99% Phenolphthalein CAS 77-09-8 for Sale
Needlepoint yellow is a weak organic acid, which appears as white or microbanded fine crystals at room temperature. Phenolphthalein is odorless and tasteless. NCI-C55798 is difficult to dissolve in water but easily soluble in ethanol (ethanol) and ether. Phenolphthalein is dissolved in ethanol solution to make an acid-base indicator. Phenolphthalein is colorless in acidic solution and red in alkali solution or alkali metal carbonate solution. However, if it is in concentrated alkali solution, it will produce colorless chemical book 3. Metal salt, red color fades away. Therefore, this characteristic is often used as an indicator in acid-base titrations in laboratories. The oxidized white color ranges from PH value 8.2 to 10.0, changing from colorless to red. When the needle tip indicator is dropped into water or a neutral or acidic aqueous solution, turbidity will appear. This is because alcohol is easily soluble in water, causing the insoluble needle in the reagent to prick out.
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| Item |
Specifications |
| Product Name |
Phenolphthalein |
| CAS |
77-09-8 |
| Melting Point |
261-263 °C (lit.) |
| Exterior |
White powder |
25kgs/bag,25kg/drum
Unilong Industry Co.,Ltd. is a growing high-tech chemical enterprise, and located in Zibo Zhangdian chemical industrial park of Shandong province. Now Unilong company already is a world leading professional manufacturer and distributor for fine chemicals materials.
With the development of society, more and more people pay more attention to environmental health.In recent years, we are engaging to expand new materials field and also set up a researching team, particularly for the fields of nutrition, skin care, daily care chemical materials.
Q1: Are you trading company or manufacturer?
A1: We are chemical factory in China. So we can provide wholesale price.
Q2: How can I get the samples?
A2: We can provide you sample for our existing products, the lead time is about 1-5 days.You just need to pay the sample
Q3: Can you provide relevant documents?
A3: Of course. We can provide Commercial Invoice, Packing List, Bill of loading, COA and Origin certificate.
Q4: Do you accept third party inspection?
A4: Yes.we do.
Q5: How long is your delivery time?
A5: Generally it is with 7 days if the goods are in stock. According to quantity your required,the delivery time may slightly change.
Q6: What's your terms of payment?
A6: We can accept various payment methods, L/C, T/T, Paypal, Western Union etc.
Q7: Can your company accept the special requirements of your customers?
A7: Of course, we can.
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