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Monitor Carefully

Food Additives with Caution

107 substances where evidence suggests some concern — limited data, conflicting studies, or restrictions in certain countries.

Showing 124 of 107 caution additives

Caution

2-butylisothiocyanate

Flavoring

2-butylisothiocyanate is an organic compound classified as a flavoring agent or adjuvant. It is primarily used in food products to impart a pungent, mustard-like flavor profile, characteristic of many compounds found naturally in cruciferous vegetables. While approved as a flavoring in the European Union, it has not been formally designated as Generally Recognized As Safe (GRAS) by the U.S. FDA.

CAS 4426-79-3View
Caution

2-ethyl-2-hexenal

Flavoring

2-ethyl-2-hexenal (CAS 645-62-5) is an unsaturated aldehyde used as a flavoring agent or adjuvant in food products. It imparts a distinctive green, fatty, and sometimes fruity or nutty aroma, making it valuable in various flavor formulations. While approved in the EU after EFSA's safety assessment, it is not listed as GRAS by the FDA.

CAS 645-62-5View
Caution3 events

Acesulfame Potassium

Sweetener

Acesulfame potassium (acesulfame K) is a synthetic non-nutritive sweetener approximately 200 times sweeter than sugar. It is widely used in beverages, baked goods, and other food products to provide sweetness without calories.

CAS 55589-62-3View
Caution

Acetaldehyde

Flavoring

Acetaldehyde (CAS 75-07-0) is a naturally occurring organic compound used as a flavoring agent in food products. It imparts fruity, fresh notes and is found naturally in many foods including fruits, fermented beverages, and bread.

CAS 75-07-0View
Caution24 events

Acetone

Flavoring

Acetone (CAS 67-64-1) is a volatile organic solvent and flavoring agent used in food processing as a solvent, washing agent, and flavor enhancer. While not approved as a food additive by the FDA, it may be present in foods as a residual processing chemical.

CAS 67-64-1View
Caution

Alum (double Sulfate Of Al And Nh4, K, Or Na)

Firming-agent

Alum is a group of double sulfate salts containing aluminum combined with ammonium, potassium, or sodium. It functions as a firming agent in food products to maintain texture and crispness, particularly in pickled vegetables and canned products.

CAS 977007-61-6View
Caution

Aluminum Ammonium Sulfate

Leavening

Aluminum ammonium sulfate is an inorganic salt compound used primarily as a leavening agent in baked goods. It functions as a chemical leavening agent that produces carbon dioxide gas, helping baked products rise, while also serving pH control and processing functions in food manufacturing.

CAS 7784-26-1View
Caution

Aluminum Hydroxide

Colorant

Aluminum hydroxide (CAS 21645-51-2) is an inorganic compound used in food as a colorant and processing aid. It functions as a color adjunct to stabilize or modify the appearance of food products in specific regulated applications.

CAS 21645-51-2View
Caution

Ammonium Chloride

Flavoring

Ammonium chloride (NH₄Cl) is an inorganic salt used in food production as a dough strengthener, leavening agent, and flavoring agent. It functions as a processing aid that improves dough texture and rise in baked goods while contributing a slightly salty taste.

CAS 12125-02-9View
Caution

Arnica Flowers (arnica Spp.)

Flavoring

Arnica flowers are the dried flowering heads of Arnica montana and related Arnica species, used as a flavoring agent or flavoring adjuvant in food products. While traditionally used in herbal preparations, their use as a food additive is limited and not formally approved by the FDA as Generally Recognized as Safe (GRAS).

CAS 977000-27-3View
Caution74 events

Aspartame

Flavoring

Aspartame (CAS 22839-47-0) is a synthetic non-nutritive sweetener and flavor enhancer approximately 200 times sweeter than sucrose. It is widely used in diet beverages, sugar-free products, and tabletop sweeteners globally, though regulatory approval varies by jurisdiction.

CAS 22839-47-0View
Caution33 events

Astaxanthin

Colorant

Astaxanthin is a naturally occurring carotenoid pigment that imparts red and pink coloring to foods. It is used as a food colorant in various products, though it is not approved as a food additive by the FDA in the United States.

CAS 472-61-7View
Caution39 events

Bromelain

Flavoring

Bromelain is a proteolytic enzyme extracted from pineapple stems and fruit. In food manufacturing, it functions as a flavor enhancer, texturizer, and processing aid, primarily used in meat tenderization and beverage production.

CAS 9001-00-7View
Caution

Butyl Acetate

Flavoring

Butyl acetate is an organic ester compound used as a flavoring agent in food products. It provides fruity, apple-like aroma notes and is commonly employed in beverage and confectionery applications.

CAS 123-86-4View
Caution

Butylated Hydroxyanisole

Flavoring

Butylated Hydroxyanisole (BHA) is a synthetic antioxidant and antimicrobial agent approved by the FDA as Generally Recognized as Safe (GRAS). It is primarily used in processed foods to prevent oxidation and extend shelf life, functioning as a preservative in oils, fats, and grain-based products.

CAS 25013-16-5View
Caution

Butylated Hydroxytoluene

Flavoring

Butylated Hydroxytoluene (BHT) is a synthetic antioxidant widely used in food processing to prevent fat and oil oxidation, extending shelf life and maintaining product quality. It also functions as a flavor enhancer and is approved by the FDA as a Generally Recognized as Safe (GRAS) food additive.

CAS 128-37-0View
Caution

Calcium Hexametaphosphate

Sequestrant

Calcium hexametaphosphate (CHMP) is an inorganic salt used as a sequestrant in food processing. It binds to metal ions and other compounds to improve food stability, texture, and shelf life in various applications including seafood, beverages, and processed foods.

CAS 10102-76-8View
Caution

Canthaxanthin

Colorant

Canthaxanthin is a carotenoid pigment used as a food colorant to impart red-orange hues to various food products. It is not approved by the FDA as a food additive but is permitted in certain applications in other regulatory jurisdictions.

CAS 514-78-3View
Caution

Carmine (coccus Cacti L.)

Colorant

Carmine is a natural red colorant derived from the cochineal insect (Coccus cacti L.), primarily used to impart red and pink hues to food and beverages. It has been used for centuries as a traditional dye and remains a common food colorant in many countries.

CAS 1390-65-4View
Caution

Carrageenan

Emulsifier

Carrageenan is a natural polysaccharide extracted from red seaweed that functions primarily as a thickener, stabilizer, and emulsifier in food products. It is widely used in dairy, meat, and plant-based foods to improve texture and prevent separation of ingredients.

CAS 9000-07-1View
Caution

Carrageenan And Salts Of Carrageenan

Emulsifier

Carrageenan and salts of carrageenan are natural polysaccharides extracted from red seaweed, widely used in food production as emulsifiers, stabilizers, and thickeners. These additives help maintain texture and consistency in dairy products, beverages, and processed foods.

CAS 977043-69-8View
Caution

Carrageenan Salts With Polysorbate 80

Other

Carrageenan Salts With Polysorbate 80 is a combination additive that pairs carrageenan, a natural gelling agent derived from red seaweed, with polysorbate 80, an emulsifier. This formulation functions as a drying agent in food products, helping to control moisture content and improve texture stability.

CAS 977043-70-1View
Caution

Carrageenan With Polysorbate 80

Emulsifier

Carrageenan with Polysorbate 80 is a combination additive that functions as an emulsifier and stabilizer in food products. It combines carrageenan, a natural thickening agent derived from red seaweed, with polysorbate 80, a synthetic emulsifier, to improve texture and shelf stability in various food applications.

CAS 977043-68-7View
Caution

Carrageenan, Ammonium Salt Of

Emulsifier

Carrageenan, ammonium salt of is a modified form of carrageenan, a natural polysaccharide extracted from red seaweed. It functions as an emulsifier, stabilizer, and thickening agent in food products, helping maintain texture and prevent ingredient separation.

CAS 60063-90-3View

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