Acids & Salts Available — Bulk Only

Citric Acid (E330)

E330
CAS 77-92-9 · Formula C6H8O7 · MW 192.12 g/mol

Citric acid is a food- and industrial-grade tricarboxylic acid that does double duty — a tart acidulant and pH buffer, and a metal-ion chelating sequestrant.

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HS Code
2918.14
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
Chelation / Sequestration · pH Adjustment
Functional Roles
CITRIC ACID
BUFFERINGCHELATINGFRAGRANCE
Applications & Use Cases
  • Acidulant & pH buffer: tartness and pH control in beverages, confectionery, jams and pharmaceutical syrups
  • Chelating sequestrant: binds metal ions in cleaning and water-treatment formulations
  • Anti-scaling agent: scale control in cleaning and process water
  • Antioxidant synergist: extends antioxidants in processed foods
  • Disinfectant active: active ingredient in EPA-registered disinfectants and sanitizers
Physical Properties
Melting Point
153 °C (anhydrous)
Boiling Point
Decomposes
Density
1.54 at 20 °C
Solubility
≥ 100 mg/mL at 22 °C
Flash Point
100 °C
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.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2918 . 14
Chapter 29
Organic chemicals
Heading 29.18
Internationally harmonized (WCO HS)
Subheading 2918.14
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
77-92-9
Molecular Formula
C6H8O7
Molecular Weight
192.12 g/mol
IUPAC Name
2-hydroxypropane-1,2,3-tricarboxylic acid
INCI Name
CITRIC ACID
PubChem CID
InChI Key
KRKNYBCHXYNGOX-UHFFFAOYSA-N
Synonyms & Trade Names
citric acid 2-hydroxypropane-1,2,3-tricarboxylic acid Citric acid, anhydrous Aciletten Anhydrous citric acid Citro Citretten Citric acid anhydrous Chemfill Hydrocerol A 1,2,3-Propanetricarboxylic acid, 2-hydroxy- 2-hydroxy-1,2,3-propanetricarboxylic acid Kyselina citronova 2-Hydroxytricarballylic acid beta-Hydroxytricarballylic acid 3-Carboxy-3-hydroxypentane-1,5-dioic acid FEMA No. 2306 FEMA Number 2306 Citric acid,anhydrous
Full Description

Citric acid is a tricarboxylic acid used as an acidulant and pH buffer in beverages, confectionery, jams and pharmaceutical syrups, where it adds tartness and adjusts pH. Its ability to chelate metal ions makes it a sequestrant and anti-scaling agent in cleaning and water-treatment formulations and a synergist that extends antioxidants in processed foods. It is also the active ingredient in EPA-registered disinfectants and sanitizers.

Frequently Asked Questions

What is citric acid used for?

Citric acid (E330, CAS 77-92-9) is a weak organic acid used as an acidulant, pH adjuster, flavoring, antioxidant synergist, and chelating agent across food and beverage, cleaning, and industrial formulations. It is also used as a buffering and sequestering agent. RawSource supplies it in bulk for these uses.

Is citric acid basically vinegar?

No. Citric acid (C6H8O7) is a triprotic solid organic acid, while vinegar is a dilute aqueous solution of acetic acid (a different, monoprotic acid). They are chemically distinct, though both are used as food acidulants. RawSource supplies citric acid as a dry powder or in solution.

Is citric acid an acid?

Yes. Citric acid is a weak triprotic organic acid with three carboxylic acid groups, which is the basis for its acidulant, buffering, and chelating functions. Its pKa values make it effective for pH control across a useful range.

Is citric acid available in bulk powder and liquid?

Yes. RawSource supplies citric acid in bulk as anhydrous and monohydrate powder and as liquid solution. CoA and SDS are available on request. Specify form, grade, and volume for available packaging such as bags, drums, or totes.

What is the cost of bulk citric acid?

Bulk citric acid pricing depends on form (anhydrous, monohydrate, or liquid), grade, packaging, and volume. RawSource quotes industrial quantities directly rather than listing a fixed price. Request a bulk quote with your form and volume for current pricing and lead time.

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.