Description

Metatartaric Acid CAS NO 39469-81-3 is a specialized organic acid derivative, primarily known as an effective crystallization inhibitor in the food and beverage industry. Its core value lies in its ability to stabilize solutions by preventing the precipitation of tartrate salts, thereby ensuring product clarity and shelf-life stability. This makes it an essential processing aid for manufacturers of wine, fruit juices, and other beverage products where maintaining a consistent, visually appealing appearance is critical for commercial success.

Application

• Wine Stabilization: Primary application for preventing tartrate crystallization (potassium bitartrate and calcium tartrate) in bottled wines, ensuring clarity and preventing sediment formation.
• Beverage Processing: Used in fruit juices, ciders, and other acidic beverages to inhibit haze and crystal formation, enhancing visual quality and shelf life.
• Food Additive: Functions as a sequestrant and stabilizer in various food systems where tartaric acid or its salts are present.
• Chemical Intermediate: Serves as a starting material or intermediate in the synthesis of other tartaric acid derivatives and specialty chemicals.
• Laboratory Reagent: Used in analytical chemistry and research settings for its specific chelating and inhibitory properties.

Basic Information

Product Name	Metatartaric Acid
CAS No.	39469-81-3
Molecular Formula	Typically a polymer of tartaric acid; (C4H6O6)n
Molecular Weight	Variable (Polymeric)
Synonyms	Polytartaric Acid; Tartaric Acid Polymer; E 353; INS 353; 2,3-Dihydroxybutanedioic Acid Homopolymer; Inhibitor T; Wine Stabilizer; Antitartar
EINECS	254-482-5

Quality Control

Our Metatartaric Acid is produced and tested to meet stringent quality standards suitable for food-grade applications. Each batch is analyzed to ensure compliance with specifications for identity, purity, and functionality. We adhere to Good Manufacturing Practices (GMP) and can provide material compliant with FCC (Food Chemicals Codex) and E 353 specifications where required. A comprehensive Certificate of Analysis (COA) detailing all test results is available for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (as Metatartaric Acid)	Min. 98.0%
Loss on Drying	Max. 2.0%
Sulfated Ash	Max. 0.1%
Heavy Metals (as Pb)	Max. 10 ppm
Arsenic (As)	Max. 3 ppm
Lead (Pb)	Max. 2 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.