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E503 Ammonium Carbonates are ammonium salts of carbonic acid used in food and beverage applications as raising agents and acidity regulators, and E503 Ammonium Carbonates are valued for producing rapid gas release that creates light, crisp textures in baked goods.
E503 Ammonium Carbonates include ammonium carbonate, ammonium bicarbonate, and ammonium hydrogen carbonate forms, and E503 Ammonium Carbonates are widely used in low-moisture bakery products such as biscuits, crackers, and cookies where ammonia can fully volatilize during baking.
E503 Ammonium Carbonates are typically supplied as white crystalline powders, and E503 Ammonium Carbonates performance depends on dosage, baking temperature, product thickness, and ventilation because complete decomposition and ammonia removal are critical for acceptable flavor.
CAS Number: 506-87-6 (Ammonium carbonate) / 1066-33-7 (Ammonium bicarbonate)
EC Number: 208-058-0 (ammonium carbonate) / 213-911-5 (ammonium bicarbonate)
Molecular Formula: (NH4)2CO3 (ammonium carbonate) / NH4HCO3 (ammonium bicarbonate)
Molecular Weight: 96.09 g/mol / 79.06 g/mol
Synonyms: E503 Ammonium Carbonates, Ammonium Carbonate, Ammonium Bicarbonate, Ammonium Hydrogen Carbonate, Baker’s Ammonia (common name), Hartshorn (historical), Ammonium Carbonates Raising Agent, E503, E503(i) Ammonium Carbonate, E503(ii) Ammonium Bicarbonate, Leavening Agent Ammonium Carbonates, Ammonium Carbonates pH Regulator, E503 Ammonium Carbonates, Ammonium Carbonates, Ammonium Carbonate, Ammonium Hydrogen Carbonate, Ammonium Bicarbonate, Ammonium Sesquicarbonate, Carbonic Acid Ammonium Salt, Carbonic Acid Diammonium Salt, Diammonium Carbonate, Monoammonium Carbonate, Ammonium Acid Carbonate, Ammonium Hydrogencarbonate, Baker’s Ammonia, Hartshorn, Salt of Hartshorn, Volatile Salt, Smelling Salt Carbonate, Food Grade Ammonium Carbonate, Food Grade Ammonium Bicarbonate, Food Grade Ammonium Sesquicarbonate, E503 Food Additive, E503 Raising Agent, E503 Leavening Agent, E503 Acidity Regulator, E503 Buffering Agent, E503 Ammonium Carbonate, E503 Ammonium Bicarbonate, E503 Ammonium Sesquicarbonate, E503 Carbonate Salts
APPLICATIONS
E503 Ammonium Carbonates are used in biscuits and cookies to create light, crisp texture and a porous structure.
E503 Ammonium Carbonates are incorporated into crackers to improve expansion and produce a dry, crunchy bite.
E503 Ammonium Carbonates are used in thin baked products where ammonia can fully volatilize during baking.
E503 Ammonium Carbonates are used in wafer products to create low-density structure and crisp texture.
E503 Ammonium Carbonates are incorporated into waffle cones to promote expansion and reduce hardness.
E503 Ammonium Carbonates are used in dry bakery snacks to support rapid leavening and reduced moisture retention.
E503 Ammonium Carbonates are used in traditional bakery recipes where baker’s ammonia provides characteristic texture and crispness.
E503 Ammonium Carbonates are incorporated into gingerbread-style cookies and spiced biscuits to support volume and crumb openness.
E503 Ammonium Carbonates are used in specialty crackers where fast gas release improves lamination and lift.
E503 Ammonium Carbonates are used in bakery mixes and premixes designed for crisp products where complete ammonia release is ensured.
E503 Ammonium Carbonates are incorporated into low-moisture dough systems to improve spread and reduce dense texture.
E503 Ammonium Carbonates are used in industrial biscuit production to support consistent expansion at controlled baking profiles.
E503 Ammonium Carbonates are used in conjunction with other leavening agents to tune gas release profile and final texture.
E503 Ammonium Carbonates are incorporated into leavening blends to enhance crispness while other systems control volume.
E503 Ammonium Carbonates are used in some extruded snack processes in selected applications to support expansion behavior.
E503 Ammonium Carbonates are valued because E503 Ammonium Carbonates decompose completely under baking conditions to release carbon dioxide, ammonia, and water vapor, creating very crisp structures without leaving alkali salts in the finished product when properly baked.
E503 Ammonium carbonates are used as leavening agents in bakery to generate CO2 and ammonia during baking.
E503 Ammonium carbonates support rapid gas release that creates porous structure.
E503 Ammonium carbonates help produce crisp texture in low-moisture baked goods.
E503 Ammonium carbonates are used in biscuits and cookies to create a light, crisp bite.
E503 Ammonium carbonates support strong lift and open crumb in thin cookies.
E503 Ammonium carbonates help reduce dense texture and improve snap in dry cookies.
E503 Ammonium carbonates are used in crackers to improve crispness and reduce density.
E503 Ammonium carbonates support porous structure and even blistering in some crackers.
E503 Ammonium carbonates help improve texture uniformity in baked snacks.
E503 Ammonium carbonates are used in wafers and wafer sheets to create low-density, crisp structure.
E503 Ammonium carbonates support fast leavening in thin batter systems.
E503 Ammonium carbonates help reduce toughness and improve wafer brittleness.
E503 Ammonium carbonates are used in gingerbread and spice cookies to achieve traditional texture in some recipes.
E503 Ammonium carbonates support characteristic rise and porous crumb in spiced biscuits.
E503 Ammonium carbonates help develop typical crispness after cooling.
E503 Ammonium carbonates are used in low-moisture cakes and dry pastries in some formulations.
E503 Ammonium carbonates support fast gas formation for light structure.
E503 Ammonium carbonates help avoid excessive residual alkalinity in some baked products.
E503 Ammonium carbonates are used in baking powders and baking mixes as leavening components in some formulations.
E503 Ammonium carbonates support CO2 generation when heated.
E503 Ammonium carbonates help provide strong lift in suitable dry baked goods.
E503 Ammonium carbonates are used in industrial bakery lines to improve throughput and consistent aeration in suitable products.
E503 Ammonium carbonates support predictable gas release under controlled oven profiles.
E503 Ammonium carbonates help reduce batch variability in crisp biscuit production.
E503 Ammonium carbonates are used in extruded snacks in some processes to create puffing and porous texture.
E503 Ammonium carbonates support gas release that increases expansion in certain doughs.
E503 Ammonium carbonates help improve crispness and reduce hard bite in some snacks.
E503 Ammonium carbonates are used in biscuit laminations to improve blistering and layering in some cracker types.
E503 Ammonium carbonates support rapid vapor and gas formation during baking.
E503 Ammonium carbonates help improve layered texture and crunch.
E503 Ammonium carbonates are used in confectionery baking inclusions to create crisp baked pieces.
E503 Ammonium carbonates support low-moisture expansion and crisp structure.
E503 Ammonium carbonates help maintain crunch in chocolate-coated biscuit pieces.
E503 Ammonium carbonates are used in cereal and granola clusters in some formulations to increase porosity.
E503 Ammonium carbonates support lighter cluster texture and reduced density.
E503 Ammonium carbonates help improve crispness in baked cereal pieces.
E503 Ammonium carbonates are used in flat baked snacks to create a light, airy bite.
E503 Ammonium carbonates support rapid leavening in thin dough sheets.
E503 Ammonium carbonates help improve snap and reduce chewiness in dry snacks.
E503 Ammonium carbonates are used in bakery R&D to design crisp textures without leaving strong alkaline aftertaste.
E503 Ammonium carbonates support complete volatilization of ammonia in properly baked products.
E503 Ammonium carbonates help achieve clean flavor in thin, dry baked goods when used correctly.
E503 Ammonium carbonates are used in bakery reformulation when sodium reduction is desired in some products.
E503 Ammonium carbonates support leavening without adding sodium ions.
E503 Ammonium carbonates help maintain volume and crispness while reducing sodium contribution.
E503 Ammonium carbonates are used in specialty bakery products where open crumb and rapid lift are key.
E503 Ammonium carbonates support high gas output during early baking stages.
E503 Ammonium carbonates help create characteristic porous interior in some biscuits.
E503 Ammonium carbonates are used in cookie formulations to improve spread and surface cracking patterns in some styles.
E503 Ammonium carbonates support rapid gas release that affects cookie geometry.
E503 Ammonium carbonates help create a lighter internal structure in thin cookies.
E503 Ammonium carbonates are used in cookie and cracker manufacturing to control density and moisture release.
E503 Ammonium carbonates support removal of ammonia during baking to prevent residual odor.
E503 Ammonium carbonates help deliver clean finished aroma when bake is adequate.
E503 Ammonium carbonates are used in bakery quality control to tune oven time and temperature for full ammonia bake-off.
E503 Ammonium carbonates support process validation for sensory and safety targets.
E503 Ammonium carbonates help reduce rejected batches caused by residual ammonia odor.
E503 Ammonium carbonates are used in confectionery panning and coating lines when baked cores need high porosity.
E503 Ammonium carbonates support crisp centers that remain crunchy under coatings.
E503 Ammonium carbonates help maintain texture contrast in coated snacks.
E503 Ammonium carbonates are used in some traditional recipes where “baker’s ammonia” is preferred for texture.
E503 Ammonium carbonates support authentic results in heritage biscuits and cookies.
E503 Ammonium carbonates help reproduce classic crispness that differs from baking soda systems.
E503 Ammonium carbonates are used in flavor-sensitive biscuits where sodium bicarbonate taste is undesirable.
E503 Ammonium carbonates support leavening without leaving sodium bicarbonate residues.
E503 Ammonium carbonates help minimize soapy aftertaste when correctly baked.
E503 Ammonium carbonates are used in industrial dough systems to improve porosity without adding alkaline salts that remain in product.
E503 Ammonium carbonates support volatilization of decomposition products during baking.
E503 Ammonium carbonates help create clean-tasting crisp products under correct process control.
E503 Ammonium carbonates are used in biscuit lines to improve bite at lower fat levels in some formulations.
E503 Ammonium carbonates support aeration that compensates for reduced shortening.
E503 Ammonium carbonates help maintain crispness in reformulated products.
E503 Ammonium carbonates are used in bakery troubleshooting to address dense texture in crackers and biscuits.
E503 Ammonium carbonates support increased gas release and improved open structure.
E503 Ammonium carbonates help correct under-leavened products when dosage and bake are optimized.
E503 Ammonium carbonates are used in bakery troubleshooting to address insufficient blistering in laminated crackers.
E503 Ammonium carbonates support rapid gas formation that enhances blister development.
E503 Ammonium carbonates help improve visual appeal and texture in some cracker styles.
E503 Ammonium carbonates are used in bakery troubleshooting to address excessive alkalinity taste from sodium bicarbonate.
E503 Ammonium carbonates support alternative leavening with reduced residual salts.
E503 Ammonium carbonates help maintain leavening performance while improving flavor cleanliness.
E503 Ammonium carbonates are used in industrial ammonia-based leavening systems for very low moisture products only.
E503 Ammonium carbonates support best performance in thin products where ammonia can fully escape.
E503 Ammonium carbonates help avoid ammonia retention by matching formulation and bake profile.
E503 Ammonium carbonates are used in laboratory baking tests to compare leavening profiles of carbonate systems.
E503 Ammonium carbonates support evaluation of gas release rate versus sodium bicarbonate.
E503 Ammonium carbonates help optimize texture and sensory outcomes in development.
E503 Ammonium carbonates are used in food-grade chemical preparations as buffering or alkalizing agents in limited contexts.
E503 Ammonium carbonates support temporary alkalinity that decomposes during heating.
E503 Ammonium carbonates help avoid residual carbonate salts in some heat-processed systems.
E503 Ammonium carbonates are used in specialty confectionery baked shells where crispness is required before filling.
E503 Ammonium carbonates support a dry, porous shell structure.
E503 Ammonium carbonates help improve crunch retention after filling in some designs.
E503 Ammonium carbonates are used in export biscuit products to maintain crispness during long logistics chains.
E503 Ammonium carbonates support low-moisture texture design that resists staling.
E503 Ammonium carbonates help reduce returns caused by dense, hard bite in crisp snacks.
E503 Ammonium carbonates are used in education and training as classic examples of thermal decomposition leaveners.
E503 Ammonium carbonates support teaching about CO2 release and ammonia volatilization in baking chemistry.
E503 Ammonium carbonates help illustrate why product thickness determines suitability.
E503 Ammonium carbonates are used in quality control to verify leavening strength and sensory outcomes in baked goods.
E503 Ammonium carbonates support batch testing for lift, porosity, and residual odor.
E503 Ammonium carbonates help ensure consistent crisp texture in production.
DESCRIPTION
E503 Ammonium Carbonates decompose when heated to release carbon dioxide, ammonia, and water, and this decomposition creates leavening gases that expand dough and generate porous texture.
E503 Ammonium Carbonates are especially suitable for thin and low-moisture baked goods because ammonia must fully evaporate to avoid residual odor or taste.
E503 Ammonium Carbonates provide rapid gas release at baking temperatures, and this fast action supports crispness and open texture in biscuits and crackers.
E503 Ammonium Carbonates are not ideal for thick or moist cakes because trapped ammonia can remain and create undesirable flavor, so product selection is critical.
E503 Ammonium Carbonates should be used according to applicable food additive regulations and good manufacturing practices for the target market.
E503 Ammonium Carbonates should be balanced with overall dough pH and flavor system because excessive use can raise pH and influence browning and taste.
E503 Ammonium Carbonates are typically supplied as white crystalline powders and can lose activity if exposed to moisture because ammonium bicarbonate decomposes slowly under humid conditions.
E503 Ammonium Carbonates should be stored in tightly closed containers in a cool, dry place to prevent moisture pickup and loss of leavening strength.
E503 Ammonium Carbonates should be handled with good hygiene and dust control practices during bulk powder processing.
E503 Ammonium carbonates are ammonium salts that decompose upon heating to release carbon dioxide, ammonia, and water vapor.
E503 Ammonium carbonates are commonly known as baker’s ammonia and are typically supplied as white crystalline powders.
E503 Ammonium carbonates provide strong leavening action but require sufficient baking to allow ammonia to fully escape.
E503 Ammonium carbonates are best suited for thin, low-moisture baked goods such as cookies, crackers, and wafers.
E503 Ammonium carbonates are not ideal for thick or high-moisture products because trapped ammonia can cause odor and off-flavor.
E503 Ammonium carbonates can create a very crisp, porous structure that differs from baking soda or baking powder systems.
E503 Ammonium carbonates should be stored in tightly closed containers because they can lose potency by volatilization and moisture interaction.
E503 Ammonium carbonates are valued for strong leavening performance and classic texture outcomes in traditional and industrial biscuit production.
PROPERTIES
Common Name: E503 Ammonium Carbonates
Chemical Type: Carbonate salts; raising agent; acidity regulator
Appearance: White crystalline powder
Odor: Slight ammonia odor possible, especially in humid air
Taste: Alkaline note possible; ammonia taste if not fully volatilized
Solubility: Soluble in water
pH Behavior: Alkaline; pH depends on carbonate type and concentration
Functional Effects: Rapid leavening gas release; crisp texture formation; porous structure
Thermal Behavior: Decomposes on heating releasing CO2, NH3, and H2O
Hygroscopicity: Sensitive to moisture; activity loss possible in humid storage
Stability: Stable when kept dry; decomposes gradually with moisture and heat
Storage Temperature: 15–25°C, tightly closed, dry
Shelf Life: Typically 12–36 months in original sealed packaging (supplier dependent)
FIRST AID
Inhalation:
Move to fresh air if dust is inhaled.
Seek medical attention if respiratory irritation persists.
Avoid breathing dust and ammonia vapors during handling.
Skin Contact:
Wash with soap and water after contact.
Remove contaminated clothing and wash before reuse.
Seek medical advice if irritation develops or persists.
Eye Contact:
Rinse cautiously with water for several minutes.
Remove contact lenses if present and easy to do, then continue rinsing.
Seek medical attention if irritation persists.
Ingestion:
Rinse mouth with water.
Seek medical attention if discomfort occurs or if a large amount is swallowed.
Never give anything by mouth to an unconscious person.
Note to Physicians:
Treat symptomatically.
Consider ammonia exposure effects if significant inhalation occurred.
Provide supportive care as needed.
HANDLING AND STORAGE
Handling:
Use appropriate PPE including gloves and safety glasses for bulk handling.
Avoid generating dust and avoid inhalation of fine powder.
Use in well-ventilated areas and avoid exposure to ammonia vapors from warm or damp material.
Ventilation:
Use general ventilation for normal handling.
Use local exhaust where dust may be generated during powder transfer.
Minimize airborne particulate accumulation in enclosed areas.
Storage:
Store in tightly closed containers in a cool, dry place.
Protect from moisture because moisture can reduce leavening strength and increase ammonia odor.
Keep away from acids and incompatible chemicals.
Spill and Leak Procedures:
Sweep up spilled powder and avoid dust generation.
Collect into suitable containers for reuse or disposal according to local regulations.
Clean residues with water if needed and dry the area to prevent slip hazards.
Handling Precautions:
Use E503 Ammonium Carbonates primarily in thin, low-moisture baked goods because complete ammonia release is required for acceptable flavor.
Control baking profile and ventilation because temperature and product thickness determine whether ammonia fully volatilizes.
Rotate stock using FIFO practices to maintain consistent quality and predictable leavening performance.
