Molekula
Scientific Supply
Molekula Phenolphthalein
Phenolphthalein is a pH indicator commonly used in titrations and as a component in certain laxatives.CAS number: 77-09-8Select the required pack size. Contact Bench & Flask for bulk quantities and availability.Supplier packaging image is illustrative; packaging may vary by pack size.Specifications Property Value Appearance White to off-white powder...
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Product information
Specification & product details.
Phenolphthalein is a pH indicator commonly used in titrations and as a component in certain laxatives.
CAS number: 77-09-8
Select the required pack size. Contact Bench & Flask for bulk quantities and availability.
Supplier packaging image is illustrative; packaging may vary by pack size.
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% |
| Sulphated Ash | ≤ 0.1% |
| Chlorides | ≤ 100mg/kg |
| Related Substances | ≤ 0.5% |
| Sulphates (SO4)(2-) | ≤ 200mg/kg |
| Identification (RAMAN) | Conforms to Reference |
Storage & handling
| Property | Value |
| Storage Temperature | Ambient |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
| Appearance | White rhombic needles |
| Odour | Odorless |
| Melting Point | 262.5 °C |
| Water Solubility | 400 mg/L at room temperature |
| Vapour Pressure | 6.7 × 10⁻¹³ mmHg at 25 °C (Estimated) |
| pKa | pKa = 9.7 (at 25 °C) |
| log P (octanol/water) | 2.41 |
Identification
| Property | Value |
| SKU | 13440009 |
| CAS Number | 77-09-8 |
| IUPAC Name | 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one |
| EC Number | 201-004-7 |
| Molecular Formula | C20H14O4 |
| Molecular Weight | 318.32 |
| Exact Mass | 318.0892 |
| SMILES | C1=CC=C2C(=C1)C(=O)OC2(C3=CC=C(C=C3)O)C4=CC=C(C=C4)O |
| InChIKey | KJFMBFZCATUALV-UHFFFAOYSA-N |
| InChI | InChI=1S/C20H14O4/c21-15-9-5-13(6-10-15)20(14-7-11-16(22)12-8-14)18-4-2-1-3-17(18)19(23)24-20/h1-12,21-22H |
| PubChem CID | 4764 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2932.20.4500 |
| Tariff Code | 2932201000 |
Safety & GHS
Danger
- Health HazardGHS07
- Serious Health HazardGHS08
Hazard statements
- H315Causes skin irritation
- H341Suspected of causing genetic defects
- H350May cause cancer
- H361fSuspected of damaging fertility.
- H401Toxic to aquatic life
Precautionary statements
- P201Obtain special instructions before use
- P263Avoid contact during pregnancy/while nursing
- P273Avoid release to the environment
- P280Wear protective gloves/protective clothing/eye protection/face protection
- P302+352IF ON SKIN: Wash with soap and water
- P362Take off contaminated clothing and wash before reuse
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Alternative names
Espotabs; Euchessina; Koprol; Laxogen; Phenolax; Phthalimetten; Phthalin; Purga; Purgophen; Trilax
Product documentation
Product specification PDF. Batch-specific certificates of analysis and safety data sheets are available on request.
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