| Product Name | Phenolphthalein |
| Synonyms | Phenolphthalein solution; 3,3-bis(p-hydroxyphenyl)phthalide; ,3-bis(4-hydroxyphenyl)-1(3H)-isobenzofuranore; 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1(3H)-one; 2-[bis(4-hydroxyphenyl)methyl]benzoic acid; Phenolphthalien |
| Molecular Formula | C20H14O4 |
| Molecular Weight | 318.3287 |
| CAS Reg;istry Number | 77-09-8 |
| Molecular Structure | |
| Product Application | Used as a litmus indicator, it is a stimulant laxative employed in the treatment of constipation. |
| Appearance | White powder |
| Color | White to yellow-white |
| Density | 1.299 g/cm³ |
| Melting Point | 258–263°C |
| Solubility | Insoluble in water, soluble in ethanol and ether |
| Stability | Stable; incompatible with strong oxidizing agents and alkalies |
| Molecular Formula | C20H14O4 |
| Boiling Point | Approx. 417.49°C |
Phenolphthalein (CAS: 77-09-8) is an organic compound with the molecular formula C20H14O4.
It appears as a white or pale yellow powder.
It is also known by several names, including Phenolphthalein, 4-[(2,4-dihydroxyphenyl)thio]-2,5-cyclohexadienone, and Phthalic acid, 3,3-bis(hydroxy-methyl).
Phenolphthalein dissolves in ethanol and alkali solutions, but not in water.
It changes from colorless in acidic solutions to red in alkaline conditions.
The melting point is between 258–263°C, and the density is 1.299 g/cm³ at 32°C.
Its boiling point is around 417.49°C.
It is stable under normal conditions but should be kept away from strong oxidizers and alkalis.
Reliable Indicator: It is widely used for accurate pH testing and titrations in laboratories.
Effective Laxative: It stimulates the intestines, helping to relieve constipation.
High-Performance Materials: It is used in the creation of durable polymers for demanding applications.
Versatile Reagent: It is an essential component in organic synthesis for various industrial uses.
Laboratories: It is used in acid-base titration, providing clear color transitions to indicate pH levels.
Pharmaceuticals: It is applied in medicinal formulations as a stimulant laxative to treat constipation.
Industry: It is essential in the manufacturing of heat-resistant polymers for sectors such as electronics, aerospace, and military.
Agriculture: It is utilized for pH management and chemical analysis in both industrial and agricultural processes.
Phenolphthalein may cause skin irritation on contact. Ingestion or improper handling can lead to toxic effects.
Appropriate protective gear, including gloves, goggles, and masks, should be used when working with phenolphthalein.
It must be handled according to safety guidelines, particularly in pharmaceutical applications.
Q1: What is phenolphthalein used for?
A1: It is primarily used as an acid-base indicator and a stimulant laxative.
Q2: Is phenolphthalein soluble in water?
A2: No, phenolphthalein is insoluble in water but can dissolve in alcohol and alkali solutions.
Q3: Can phenolphthalein be used in industrial applications?
A3: Yes, it is used in the production of polymers and for pH control in various industrial applications.
Q4: How should phenolphthalein be handled?
A4: Protective equipment should be worn to prevent contact with skin and eyes. Use in a well-ventilated space.
Q5: Does phenolphthalein cause side effects?
A5: It can cause skin irritation and allergic reactions. It should be used with caution, especially in medical formulations.
For more information on other chemicals, visit Trust International - Other Chemicals.
| Product Name | Phenolphthalein |
| Synonyms | Phenolphthalein solution; 3,3-bis(p-hydroxyphenyl)phthalide; ,3-bis(4-hydroxyphenyl)-1(3H)-isobenzofuranore; 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1(3H)-one; 2-[bis(4-hydroxyphenyl)methyl]benzoic acid; Phenolphthalien |
| Molecular Formula | C20H14O4 |
| Molecular Weight | 318.3287 |
| CAS Reg;istry Number | 77-09-8 |
| Molecular Structure | |
| Product Application | Used as a litmus indicator, it is a stimulant laxative employed in the treatment of constipation. |
| Appearance | White powder |
| Color | White to yellow-white |
| Density | 1.299 g/cm³ |
| Melting Point | 258–263°C |
| Solubility | Insoluble in water, soluble in ethanol and ether |
| Stability | Stable; incompatible with strong oxidizing agents and alkalies |
| Molecular Formula | C20H14O4 |
| Boiling Point | Approx. 417.49°C |
Phenolphthalein (CAS: 77-09-8) is an organic compound with the molecular formula C20H14O4.
It appears as a white or pale yellow powder.
It is also known by several names, including Phenolphthalein, 4-[(2,4-dihydroxyphenyl)thio]-2,5-cyclohexadienone, and Phthalic acid, 3,3-bis(hydroxy-methyl).
Phenolphthalein dissolves in ethanol and alkali solutions, but not in water.
It changes from colorless in acidic solutions to red in alkaline conditions.
The melting point is between 258–263°C, and the density is 1.299 g/cm³ at 32°C.
Its boiling point is around 417.49°C.
It is stable under normal conditions but should be kept away from strong oxidizers and alkalis.
Reliable Indicator: It is widely used for accurate pH testing and titrations in laboratories.
Effective Laxative: It stimulates the intestines, helping to relieve constipation.
High-Performance Materials: It is used in the creation of durable polymers for demanding applications.
Versatile Reagent: It is an essential component in organic synthesis for various industrial uses.
Laboratories: It is used in acid-base titration, providing clear color transitions to indicate pH levels.
Pharmaceuticals: It is applied in medicinal formulations as a stimulant laxative to treat constipation.
Industry: It is essential in the manufacturing of heat-resistant polymers for sectors such as electronics, aerospace, and military.
Agriculture: It is utilized for pH management and chemical analysis in both industrial and agricultural processes.
Phenolphthalein may cause skin irritation on contact. Ingestion or improper handling can lead to toxic effects.
Appropriate protective gear, including gloves, goggles, and masks, should be used when working with phenolphthalein.
It must be handled according to safety guidelines, particularly in pharmaceutical applications.
Q1: What is phenolphthalein used for?
A1: It is primarily used as an acid-base indicator and a stimulant laxative.
Q2: Is phenolphthalein soluble in water?
A2: No, phenolphthalein is insoluble in water but can dissolve in alcohol and alkali solutions.
Q3: Can phenolphthalein be used in industrial applications?
A3: Yes, it is used in the production of polymers and for pH control in various industrial applications.
Q4: How should phenolphthalein be handled?
A4: Protective equipment should be worn to prevent contact with skin and eyes. Use in a well-ventilated space.
Q5: Does phenolphthalein cause side effects?
A5: It can cause skin irritation and allergic reactions. It should be used with caution, especially in medical formulations.
For more information on other chemicals, visit Trust International - Other Chemicals.
