Molekula
Phenolphthalein
Phenolphthalein is a pH indicator commonly used in titrations and as a component in certain laxatives. It appears as a white to pale yellow crystalline powder and turns pink in basic solutions. CAS: 77-09-8, Molecular Formula: C20H14O4, Molecular Weight: 318.32 g/mol. Store at ambient temperature. Signal word: Danger. Molekula supplies Phenolphthalein from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Phenolphthalein is a pH indicator commonly used in titrations and as a component in certain laxatives. It appears as a white to pale yellow crystalline powder and turns pink in basic solutions. CAS: 77-09-8, Molecular Formula: C20H14O4, Molecular Weight: 318.32 g/mol. Store at ambient temperature. Signal word: Danger. Molekula supplies Phenolphthalein from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | White to off-white powder |
| Melting Point | 260 - 263°C |
| Loss on Drying | ≤ 0.5% (110°C) |
| Solubility | Practically insoluble in water, soluble in alcohol. |
| Assay | ≥ 98.0% |
| Chlorides | ≤ 100mg/kg |
| Related Substances | ≤ 0.5% |
| Sulfated ash | ≤ 0.1% |
| Sulfates | ≤ 200mg/kg |
| Identification (RAMAN) | Conforms to Reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 60 months |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| CAS Number | 77-09-8 |
| Molecular Formula | C20H14O4 |
| Molecular Weight | 318.32 |
| SMILES | C1=CC=C2C(=C1)C(=O)OC2(C3=CC=C(C=C3)O)C4=CC=C(C=C4)O |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2932.20.4500 |
| Tariff Code | 2932201000 |
Safety & GHS
-
Explosive
GHS01
-
Flammable
GHS02
Hazard statements
- H315 Causes skin irritation
- H341 Suspected of causing genetic defects
- H350 May cause cancer
- H361f Suspected of damaging fertility.
- H401 Toxic to aquatic life
Precautionary statements
- P201 Obtain special instructions before use
- P263 Avoid contact during pregnancy/while nursing
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P362 Take off contaminated clothing and wash before reuse
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is phenolphthalein used for?
Phenolphthalein is primarily used as a pH indicator in titrations, turning pink in basic solutions and colorless in acidic ones.
What is the chemical formula and molecular weight of phenolphthalein?
The chemical formula is C20H14O4, and the molecular weight is 318.32 g/mol.
How should phenolphthalein be stored?
Phenolphthalein should be stored at ambient temperature, away from moisture and direct light.
What grade of phenolphthalein does Molekula supply?
Molekula supplies phenolphthalein in analytical grade.
Can Molekula supply phenolphthalein in bulk?
Yes, Molekula can supply phenolphthalein in bulk quantities—please contact our sales team for details.
What documentation comes with a phenolphthalein order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.