o-Cresolphthalein (White)
| Name |
o-Cresolphthalein(White) |
| Synonyms |
3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone |
| Molecular Structure |
|
| Molecular Formula |
C22H18O4 |
| Molecular Weight |
346.38 |
| CAS Registry Number |
596-27-0 |
| EINECS |
209-881-8 |
Properties
| Melting point |
223-225 ºC |
| Water solubility |
slightly soluble |
Chemical Property/Description:
1. Physical properties: o-Cresolphthalein is a white to light yellow crystalline powder with good solubility, soluble in ethanol, ether and other organic solvents, slightly soluble in water and acidic solutions.
2. Chemical properties:o-Cresolphthalein is an acid-base indicator, and its color changes with the change of pH value. In acidic environment, o-Cresolphthalein is colorless. In neutral or appears red. This property makes it used as an acid-base indicator in many chemical experiments.alkaline environments.
Main Uses:
1. Acid-base indicator: Because the color of o-Cresolphthalein changes with the change of pH value, it is commonly used as an acid-base indicator. In the chemical experiment, by observing the color change of o-Cresolphthalein, we can judge whether the chemical reaction has reached the end point, so as to control the experimental process.
2. Pharmaceutical intermediates: o-Cresolphthalein can be used as a pharmaceutical intermediate for the synthesis of antibacterial drugs, antipyretic analgesics and other drugs. For example, o-crephenolphthalein can be used in the synthesis of non-steroidal anti-inflammatory drugs such as aspirin.
3. Dye intermediates: o-Cresolphthalein can also be used to synthesize dye intermediates, such as cationic dyes, acid dyes, etc. These dyes are widely used in textile, printing and dyeing, papermaking and other industries.
Detailed Photos
FAQ
Question 1: Can I get samples?
Answer: Yes,you can get free samples of our most products,
while the courier cost will be borne by the buyers.
Question 2: What's your MOQ?
Answer: For a express delivery order,the MOQ is usually 100 g~1 kg;
for an air transport order or sea delivery order ,the MOQ is usually 25 kgs.
Question 3: What's your delivery time?
Answer:
Orders shipped by express delivery,the delivery time is usually 5~7 working days;
Orders shipped by air transport,usually around 7~10 working days;
Orders shipped by sea , usually around 2~3 working weeks.
Question 4: What are the different payment methods?
Answer: We usually accept T/T, L/C and Western Union.
Question 5: How do you treat quality complaint?
We take quality very seriously, it is one of the founding principles of our business.
If the quality problem actually exists, we will replace with qualified goods or refund the money.
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