Ammonium Carbonate
AKA “506-87-6, Diammonium carbonate, Carbonic acid, diammonium salt, Ammoniumcarbonat, Ammonium carbonicum, Ammonia sesquicarbonate, Carbonate d'ammoniaque, ammonium salt (1:2), Hartshorn
Ingredient
Ingredient Facts
Ammonium carbonate
AKA: 506-87-6, Diammonium carbonate, Carbonic acid, Diammonium salt, Ammoniumcarbonat, Ammonium carbonicum, Ammonia sesquicarbonate, Carbonate d'ammoniaque, Ammonium salt (1:2), Hartshorn
Ingredient · Buffering · EWG: 4
Synthetic
Not Clean
Ammonium carbonate appears as a colorless crystalline solid or a white powder with a strong odor of ammonia. Noncombustible. The primary hazard is the threat to the environment. Immediate steps should be taken to limit spread to the environment. Used to make other ammonium compounds, in pharmaceuticals, in food processing.
Solubility Soluble in water
Formula
CH8N2O3
Mol. Weight
96.09
CAS #
10361-29-2
Form
Powder
State
Ammonium carbonate appears as a colorless crystalline solid or a white powder with a strong odor of ammonia. Noncombustible. The primary hazard is the threat to the environment. Immediate steps should
See origin →
Functions
Buffering
Stabilizes pH
Reduces Inflammation
Locks In Moisture
Traditional Use
Used in traditional Asian cuisine and baking since medieval times as a leavening agent; adapted for cosmetics in the 19th and 20th centuries as a pH buffer and skin stimulant. Also historically known as sal volatile or hartshorn.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Potential Sensitizer
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR