Lead(II) phthalate CAS 57142-78-6
| CAS No. | 57142-78-6 |
| Molecular Formula | Pb |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies Lead(II) phthalate (CAS 57142-78-6), a certified reference material (molecular formula PbC8H4O4, MW 371.32 g/mol) for analytical method development and quality control.
Lead(II) phthalate (PbC8H4O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Lead(II) phthalate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | Pb C8H4O4 |
| Molecular Weight | 371.32 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Lead Standards
Recommended Standards
- 3,5-Dichloro-1-phenylpyrazin-2(1H)-one (CAS 87486-37-1)
- N,3,5-trimethyl-N-(3-(trifluoromethyl)phenyl)benzamide (CAS 338757-15-6)
- 4-(2-Chloroethoxy)-3-methoxybenzonitrile (CAS 1094313-50-4)
- N1,N3-Dipropylpropane-1,3-diamine (CAS 65597-23-1)
- (3-Aminopiperidin-1-yl)(2,4-dimethylphenyl)methanone hydrochloride (CAS 1836419-49-8)
- 1-(2,2-Dimethyl-3-pyrrolidinyl)-4-methylpiperidine (CAS 1936038-40-2)
- (S)-1-(tert-Butoxycarbonyl)-5-oxopiperazine-2-carboxylic Acid (CAS 1033713-11-9)
- N,N-1,6-Hexanediylbis-1-aziridinecarboxamide (CAS 2271-93-4)
- 2-Amino-4-(tert-butoxy)-3,3-dimethyl-4-oxobutanoic acid (CAS 1214851-34-9)
- Semaglutide impurity 74 (CAS CATO-C4X-222674)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com