Salts & Minerals
REACH
Diammonium citrate
CAS Number
3012-65-5
EC Number
221-146-3
What is Diammonium citrate?
Diammonium citrate (CAS 3012-65-5), also known as dibasic ammonium citrate, is a water-soluble ammonium salt of citric acid.
Where is Diammonium citrate used?
- Food and beverage: acidulant and buffering salt to maintain target pH ranges during processing
- Personal care: metal ion sequestration in rinse-off and leave-on products prevents discoloration and preservative degradation
- Water treatment: chelating action complexes calcium, magnesium, and heavy metal ions
- Fertilizer formulations: soluble nitrogen and citrate source compatible with micronutrient blends
- It serves as a buffering agent, chelator, and pH regulator.
Good to know: Food-grade material meets FCC specification; technical-grade product is for industrial and agricultural use.
Commercial specifications
- Bulk supply in 25 kg bags, larger packaging for industrial volumes
Other Names (Synonyms)
Dibasic ammonium citrate|diammonium hydrogen citrate|citric acid diammonium salt|Ammonium monohydrogencitrate|ammonium hydrogen citrate|Ammonium citrate, dibasic|2-Hydroxy-1,2,3-propanetricarboxylic acid, diammonium salt|Microstop
What are the physical properties of Diammonium citrate?
Melting Point 185 °C (dec.)(lit.)
Boiling Point 100 °C(lit.)
Density 1.48 g/cm³ @ Temp: 25 °C
Appearance Ammonium citrate (various forms) is a white powdery material with a slight ammonia-like odor.
Color White
Odor Slight ammonia odor
Form Solid
Water Solubility Soluble in water. Slightiy soluble in alcohol.
Refractive Index 1.4650 (estimate)
pH 4.0-5.5 (25℃, 1M in H2O)
Log P -2.840
How is Diammonium citrate classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
Which trade and regulatory codes apply to Diammonium citrate?
HS Code 29212900
UN Number 9087
WGK (Germany) 3