Arsenic AcidDISCONTINUED CAS 7778-39-4
| CAS No. | 7778-39-4 |
| Molecular Formula | H3AsO4 |
| Molecular Weight | 141.94 g/mol |
| 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 Arsenic AcidDISCONTINUED (CAS 7778-39-4), a certified reference material (molecular formula H3AsO4, MW 141.94 g/mol) for analytical method development and quality control.
Owing to an inorganic composition, Arsenic AcidDISCONTINUED is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 141.94 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | H3AsO4 |
| Molecular Weight | 141.94 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Freely soluble in water |
| Stability | Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1959 |
Related Arsenic Standards
- Arsenic(III) oxide-<SUP>18</SUP>O<SUB>3</SUB> (CAS 1257737-04-4)
- Arsenic disulfide (CAS 1303-32-8)
- ARSENIC PENTOXIDE (CAS 1303-28-2)
- Arsenic(III) sulfide (99.9%-As) (CAS 1303-33-9)
- Arsenic pentoxide hydrate (CAS 12044-50-7)
- Arsenic(V) sulfide (CAS 1303-34-0)
- Arsenic (CAS 7440-38-2)
- 16331-85-4 Arsenic acid (H3AsO4), monocesium salt (8CI,9CI) Caesium arsenate Arsenic acid cesium salt CDA CDA (frequency multiplier) Cesium arsenate Cesium dihydrogen arsenate (CAS 16331-85-4)
Recommended Standards
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- 1-benzyl 2-methyl azetidine-1,2-dicarboxylate (CAS 130591-93-4)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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