| CAS No.: | 77-09-8 |
|---|---|
| Formula: | C20h14o4 |
| EINECS: | 201-004-7 |
| Type: | Pharmaceutical Intermediates |
| Appearance: | Powder |
| Quality: | Industrial |
| Samples: |
|---|
| Customization: |
|---|
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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.
| TEST ITEM | SPECIFICATION | RESULTS |
| Characteristics | White or almost white powder | White or almost white powder |
| Melting Point | About 260°C-262°C | 261°C ~262°C |
| Identification | A:Positive B:Positive |
A:Positive B:Positive |
| Related Substances | Less than 0.01% | <0.01% |
| Heavy Metals | Not more than0.001% | <0.0009% |
| Acidity or Alkalinity | Complies | Complies |
| Chlorides | Not more than 0.01% | <0.01% |
| Sulphates | Not more than 0.02% | <0.02% |
| Loss on Drying | Not more than 0.5% | 0.12% |
| Sulphated Ash | Not more than 0.1% | 0.01% |
| Assay | 98.0%-101.0%(C20H14O4) | 99.6% |
| Storage condition | Store in well closed drums, in cool and dry storage area. | |
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3.How about the price? Can you make it cheaper?
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Price is negotiable under different conditions,
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4.Do you offer free samples?
A 5 Stars Review=A Free Sample
It's appreciated that you could write us positive reviews if you like our products and service,
we will offer you some free samples on your next order.
5.Are you able to deliver on time?
Of course!
we specialized in this line for many years, many customer make a deal with me because we can
deliver the goods on time and keep the goods top quality!
Based on the quantity, usually we will send the products to you in 2-3days after you make the payment.
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We usually accept T/T,, Western Union, L/C.
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We usually use DHL,EMS,TNT ,Fedex etc.
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Sure. You are very welcomed to visit our company in, China.
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