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Potassium carbonate

CAS Number: 584-08-7

Chemical Formula: K2CO3

Synonyms:

PotassiumCarbonateAnhydrousK2CO3

PotassiumCarbonateAnhydrousAr

Carbonicaciddipotassiumsalt

Appearance: White power

HS Code: 28364000

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Products Description of Potassium carbonate CAS#584-08-7

Potassium carbonate (molecular formula: K₂CO₃), also known as potash or pearl ash, appears as a white powder or colorless solid crystal. It has a salty taste and deliquescent properties, and can dissolve in water to form a strongly alkaline solution. However, it is insoluble in organic solvents like ethanol.

Parameters

Melting point	891 °C (lit.)
Boiling point	decomposes [STR93]
bulk density	750kg/m3
density	2.43 g/mL at 25 °C
storage temp.	Store at +5°C to +30°C.
solubility	H2O: 1 M at 20 °C, clear, colorless
pka	10.33[at 20 ℃]
form	powder
color	Yellow
Specific Gravity	2.29
Odor	at 100.00?%. odorless
PH	10.52(1 mM solution);11(10 mM solution);11.36(100 mM solution);
Water Solubility	1120 g/L (20 ºC)
λmax	λ: 260 nm Amax: 0.03 λ: 280 nm Amax: 0.02
Sensitive	Hygroscopic
Merck	14,7619
BRN	4267587
Dielectric constant	5.6（16.0℃）
Stability:	Stable. Incompatible with moisture, acids, magnesium bromine trifluoride and magnesium bromine trichloride.
CAS DataBase Reference	584-08-7(CAS DataBase Reference)
NIST Chemistry Reference	Dipotassium carbonate(584-08-7)
EPA Substance Registry System	Potassium carbonate (584-08-7)

Safety Information

Hazard Codes	Xn
Risk Statements	22-36/37/38-20/21/22
Safety Statements	26-36-37/39
RIDADR	3262
WGK Germany	1
RTECS	TS7750000
F	3
TSCA	Yes
PackingGroup	III
HS Code	28364000
Hazardous Substances Data	584-08-7(Hazardous Substances Data)
Toxicity	LD50 orally in rats: 1.87 g/kg, H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969)

Product Application of Potassium carbonate CAS#584-08-7

Potassium carbonate is a versatile industrial material with targeted uses across sectors. In the optical glass industry, it plays a key role in optimizing product performance—specifically enhancing the glass’s transparency, mechanical strength, and light refractive index. In welding operations, it is incorporated into welding rods to maintain arc stability and avoid arc breakage. In the textile and dyeing field, it acts as a VAT dye and a specialized de-whitening agent for ice dyeing processes. It also has environmental and safety applications: it serves as an absorbent for removing harmful gases like carbon dioxide and hydrogen sulfide, and when blended with soda ash, it becomes a raw material for producing dry powder fire extinguishing agents.

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