Acesulfame (Acesulfame Potassium, Ace-K) Product Overview

CAS Number: 33665-90-6

Chemical Name: 6-Methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide

Molecular Formula: C4H5NO4S

Molecular Weight: 163.15

EINECS: 251-622-6

Basic Physicochemical Properties

- Sweetness: 130–200 times sweeter than sugar; slightly bitter at high concentrations. When combined with aspartame or cyclamate, can mask bitterness and has a synergistic sweetness-enhancing effect.

- Solubility: 270g/L in water at 20°C, very soluble in water; slightly soluble in ethanol, poorly soluble in fats.

- Stability:

- Non-hygroscopic, stable during long-term storage at room temperature;
- Heat-resistant, does not decompose during baking or high-temperature sterilization;
- Stable over a wide pH range (3–10);
- Melting point 123.5°C, decomposes around 250°C.
- Caloric Property: Not absorbed or metabolized by the body, zero calories, suitable for sugar control and weight management.

Specification

Appearance                   White crystalline powder

Assay                            99.0-101.0%

Water solubility              Free soluble

Ultraviolet absorption     227±2nm

Loss on Drying               1.0 %max

Sulfate                          0.1% max

Potassium                     17.0-21 %

Impurity                       20ppm max

Heavy metals (Pb)         1.0ppm max

Fluorid                          3.0ppm max

Selenium                      10.0ppm max

Lead                             1.0ppm max

Core Product Advantages

- High sweetness, very low usage, significantly reduces formulation cost;

- Excellent heat stability, suitable for baking, canned foods, high-temperature sterilized beverages;

- Non-fermentable, not utilized by microbes, extends shelf life of foods;

- Strong compatibility with other sweeteners like sugar, sugar alcohols, or artificial sweeteners to improve taste;

- Approved food additive, recognized by JECFA, FDA, and China GB2760, with an ADI of 15mg/kg body weight per day.

Main Applications

- Food Industry (China GB2760 limit 0.3g/kg): Carbonated drinks, instant powders, ice cream, pastries, jams, candied fruits, pickles, chewing gum, tabletop sugar substitutes;

- Pharmaceutical Industry: Oral liquids, cough syrups, chewable tablets, health supplements for taste masking;

Differentiation Note

- CAS 33665-90-6 refers to free acid form of acesulfame; the commercially common Ace-K (potassium salt) has CAS 55589-62-3. Both are generally called acesulfame, with potassium salt widely traded in production and commerce.

Packaging and Storage

- Food-grade standard packaging: 25kg cardboard drums lined with food-grade PE inner bags; 

 18tons per FCL with pallets,20tons per FCL without pallets