Benzaldehyde sodium bisulfite CAS 4657-12-9
| CAS No. | 4657-12-9 |
| Molecular Formula | C7H7O4S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Benzaldehyde sodium bisulfite.
CATO supplies Benzaldehyde sodium bisulfite (CAS 4657-12-9), a certified reference material (molecular formula C7H7O4SNa, MW 210.18 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Benzaldehyde sodium bisulfite is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 210.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Benzaldehyde sodium bisulfite 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 | C7H7O4S Na |
| Molecular Weight | 210.18 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
Related Benzaldehyde Standards
- Benzaldehyde-α-<SUP>13</SUP>C (CAS 10383-90-1)
- Benzaldehyde, 3-iodo-5-methoxy-4-(2-propenyloxy)- (CAS 106331-79-7)
- Benzaldehyde, 2-hydroxy-3-methoxy-6-nitro-, sodium salt (CAS 111042-36-5)
- Benzaldehyde-PEG4-azide (CAS 1151451-77-2)
- Benzaldehyde, 4-(3,4-difluorophenoxy)-3-fluoro- (CAS 1157092-88-0)
- Benzaldehyde, 2-chloro-4-(trifluoromethyl)-, oxime (CAS 1188445-87-5)
- Benzaldehyde-α-<SUP>13</SUP>C,d<SUB>6</SUB> (CAS 1215830-20-8)
- Benzaldehyde, 2-fluoro-5-(hydroxymethyl)- (CAS 1288991-06-9)
Recommended Standards
- 6-Methyl-2-methylthio-4,7(3H,8H)-pteridinedione Disodium Salt (CAS 1189712-51-3)
- S-Nitroso-N-acetyl-D,L-penicillamine (CAS 67776-06-1)
- ((2R,3S,4R,5R)-5-(6-Amino-2-((3-aminopropyl)thio)-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl trihydrogen diphosphate (CAS 110224-45-8)
- 1-Bromo-2-ethynyl-4-fluorobenzene (CAS 1693887-36-3)
- 2-Fluorohexadecanoic acid (CAS 16518-94-8)
- N-cyclopropyl-N-(pyridin-4-yl)glycine (CAS 1179273-76-7)
- 3-methyl-2-phenylbutan-1-amine (CAS 196106-01-1)
- 3-(1-Acetyl-piperazin-2-yl)-benzamide (CAS 1316221-75-6)
- 1-(2-Methoxy-4-methylphenyl)ethan-1-amine (CAS 1158048-62-4)
- MOTS-c Peptide (CAS 1627580-64-6)
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