Acids & Salts Available — Bulk Only

Sodium Diacetate

CAS 126-96-5 · Formula C4H7NaO4 · MW 142.09 g/mol

A solid-form acetic-acid source that delivers acidity, buffering, and shelf-stability to foods and feed. Used in food processing as an acidulant, buffer, and flavoring agent, as a mold and rope inhibitor in baked goods, and as a preservative for hay and silage.

Request SDS
HS Code
2915.29
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
pH Adjustment · Preservation
Solubility
SOLUBILITY IN WATER: 1 G/ML
Functional Roles
Industries Served
Applications & Use Cases
  • Food processing: Acidulant, buffer, and flavoring agent
  • Baked goods: Mold and rope inhibitor
  • Animal feed: Preservative and sequestrant for hay and silage
Physical Properties
Solubility
SOLUBILITY IN WATER: 1 G/ML
pH
4,5-5,0 (10 % aqueous solution)
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

Request SDS →
HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2915 . 29
Chapter 29
Organic chemicals
Heading 29.15
Internationally harmonized (WCO HS)
Subheading 2915.29
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
126-96-5
Molecular Formula
C4H7NaO4
Molecular Weight
142.09 g/mol
IUPAC Name
sodium;acetic acid;acetate
PubChem CID
InChI Key
BHZOKUMUHVTPBX-UHFFFAOYSA-M
Synonyms & Trade Names
SODIUM DIACETATE Acetic acid, sodium salt (2:1) Sodium hydrogen diacetate Sodium acid acetate Dykon Acid acetate Sodium acetate, acid Sodium hydrogen acetate Sodium acetate (1:2) Acetic acid dimer, sodium salt INS NO.262(II) INS-262(II) E-262(II) sodium;acetic acid;acetate
Full Description

Sodium diacetate (CAS 126-96-5), a 1:1 molecular complex of sodium acetate and acetic acid. Used in food processing as an acidulant, buffer, and flavoring agent, as a mold and rope inhibitor in baked goods, and as a preservative for hay and silage.

Frequently Asked Questions

What exactly is sodium diacetate?

Sodium diacetate (CAS 126-96-5) is a 1:1 molecular complex of sodium acetate and acetic acid (C4H7NaO4). It is used in food processing as an acidulant, buffer, and flavoring agent, as a mold and rope inhibitor in baked goods, and as a preservative for hay and silage.

Is sodium diacetate the same as vinegar?

No. Vinegar is a dilute aqueous solution of acetic acid, whereas sodium diacetate is a solid 1:1 complex of sodium acetate and acetic acid. It delivers acetic-acid functionality in dry, free-flowing form.

What is sodium diacetate used for in baked goods?

In baked goods it acts as a mold and rope inhibitor, and more broadly as an acidulant, buffer, and flavoring agent in food processing. It is also used as a preservative and sequestrant for hay and silage in animal feed.

What HS code applies to sodium diacetate?

Sodium diacetate is classified under HS 2915.29 (acetic acid and its salts, other). Confirm the destination-country tariff line and request the CoA and SDS with your order.

How is bulk sodium diacetate supplied?

It is supplied to food processors and feed producers as a free-flowing powder or granules in bags, drums, or totes. Request a bulk quote with your target volume and grade requirement.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.