Cyclamic Acid (INS 952(i)): A Comprehensive Guide to This Low-Calorie Sweetener
Answer Snapshot
- What it is: The free acid form of the cyclamate sweetener family, though its salts are usually used in foods.
- Safety consensus: JECFA and EFSA support use within an ADI of 0-11 mg/kg body weight/day; approval is not uniform globally.
- Common uses: Diet drinks, tabletop sweeteners, baked goods, confections, and preserved foods, usually via cyclamate salts.
- Blood sugar impact: It is not digested like sugar and does not meaningfully affect blood glucose or insulin.
- Who should be careful: Consumers should check local regulations because approval differs by country.
- Label names / aliases: Cyclamic acid, cyclamate, cyclohexylsulfamic acid, INS 952(i).
Quick Facts
| Attribute | Detail |
|---|---|
| Ingredient name | Cyclamic acid |
| INS code | 952(i) |
| Functional class | Non-nutritive sweetener |
| Sweetness potency | About 30-50 times sweeter than sucrose |
| Caloric value | Negligible in practice because it is not metabolized like sugar |
| ADI | 0-11 mg/kg body weight/day |
| Stability | Typically stable in pH 2.0-8.0 and to about 160°C |
| Blood sugar impact | No meaningful glycemic effect |
| Typical label names | Cyclamic acid, cyclamate, INS 952(i) |
What It Is
Cyclamic acid, also called cyclohexylsulfamic acid, is the parent compound behind the cyclamate sweetener group. It was discovered in 1937 and remains one of the older non-nutritive sweetener chemistries still discussed in food regulation.
In real formulations, the sodium and calcium salts are usually preferred because they dissolve more easily and handle processing conditions better. Even so, understanding the free acid form is useful because it anchors the chemistry and regulatory identity of the whole family.
Safety
JECFA reaffirmed an ADI of 0-11 mg/kg body weight/day, and EFSA later supported the view that cyclamates do not present carcinogenic, genotoxic, or reproductive risk at approved exposure levels. Those reviews are the basis for continued use in many countries.
The main complication is not a current safety consensus gap between major reviewers, but a regulatory history that still differs by jurisdiction. That is why cyclamic acid and its salts may be common in one market and absent in another.
Metabolism and Blood Sugar
Cyclamic acid is not digested like a carbohydrate. It passes through the gastrointestinal tract largely unchanged and is excreted in urine, so it does not provide practical caloric value in the way sucrose does.
Because it is not converted into glucose, it does not meaningfully raise blood sugar or insulin. That makes cyclamates relevant for products positioned for reduced-sugar or diabetes-conscious consumers.
Stability
Cyclamic acid is technically stable in a broad pH range and can tolerate many standard food-processing conditions. Typical use guidance places its useful heat stability around 160°C, with breakdown becoming more likely above about 180°C, especially in acidic systems.
Its salts are usually chosen when better solubility and process reliability are needed. That is why sodium cyclamate and calcium cyclamate are more common in commercial foods than cyclamic acid itself.
Common Uses
Cyclamate systems are used in diet beverages, powdered drink mixes, tabletop sweeteners, some baked goods, sugar-free confectionery, flavored dairy products, and reduced-sugar preserves. In many of those products, the ingredient is blended with saccharin to create a more sugar-like sweetness profile.
The combination of cost efficiency, mild taste, and solid process stability explains why cyclamates continue to matter in the markets where they are approved.
Compare and Alternatives
Compared with saccharin, cyclamic acid is milder and less metallic, though not as sweet. Compared with aspartame, it is more stable in heated applications. Compared with sucralose or stevia systems, it is less potent but often easier to cost into mass-market formulations.
Its most practical role is as part of a blend rather than as a premium standalone sweetener. The classic cyclamate-saccharin pairing remains the reference point.
Official References
- FAO/WHO Codex Alimentarius GSFA: Search for "Cyclamic Acid" or INS 952(i) at the GSFA Online Database
- JECFA Monograph: Evaluation of Certain Food Additives and Contaminants (FAO/WHO, 2000)
- EFSA Scientific Opinion: Re-evaluation of cyclamic acid, sodium cyclamate and calcium cyclamate as food additives
The information contained in this article is for educational and informational purposes only and is not intended to serve as medical advice. Food additive regulations vary by country, so always confirm local approval status and labeling requirements.