Sodium Benzoate, CAS 532-32-1, is also known as sodium benzenecarboxylate or E211. It is the sodium salt of benzoic acid. Confirm particle form, assay, moisture, intended use, destination requirements, and current TDS, COA, and SDS before qualification.
Sodium Benzoate CAS 532-32-1
- CAS: 532-32-1
- Synonyms: Sodium benzoate; Benzoic acid sodium salt; Sodium benzenecarboxylate; E211
- Einecs: 208-534-8
- Molecular Formula: C₇H₅NaO₂
- Grade: Confirm particle form, assay, moisture, intended end use, and any destination-specific compliance requirement
- Package: Confirm packaging for the offered particle form and intended end use
Product Description
Product name: Sodium Benzoate
Appearance: White crystalline material; confirm the offered particle form
Chemical identity: The sodium salt of benzoic acid; it is not benzoic acid itself
Molecular formula: C₇H₅NaO₂
Molecular weight: 144.11 g/mol
CAS number: 532-32-1
EC number: 208-534-8
Industrial role: Used in formulation systems where sodium benzoate is technically and compliance-wise appropriate
Application boundary: The sodium salt of benzoic acid; it is not benzoic acid itself
Offered specification: Confirm particle form, assay, moisture, intended end use, and any destination-specific compliance requirement
Buyer information: State the intended end use, target specification, quantity, destination, and required TDS, COA, SDS, or compliance documents
FAQ - Technical & Supply Chain
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Q:
Are Sodium Benzoate, E211 and Benzoic Acid Sodium Salt the same substance?
A: Yes. These names identify sodium benzoate, CAS 532-32-1, when E211 is used as the food-additive designation. It is not benzoic acid or potassium benzoate. The purchase specification should state the chemical identity, grade and applicable compendial or food standard rather than relying only on an E-number. -
Q:
Which grade and batch specifications should be set for Sodium Benzoate?
A: Food, compendial and industrial grades are not automatically interchangeable. Agree assay and basis, loss on drying or water, acidity or alkalinity, chloride, sulfate, insoluble matter, related compounds and relevant metal limits. The batch COA should use the same edition and methods as the standard named in the purchase contract. -
Q:
How should the physical form and packing of Sodium Benzoate be specified?
A: State powder, granules or another particle-size range according to dissolving and dust-control equipment. Agree net weight, food-contact liner where required, closure, palletization and acceptable caking. On receipt, check seals, lot number and package condition, then confirm that the supplied form and destination-market documentation match the order.
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