Sodium carbonate

PHYSICAL AND CHEMICAL PROPERTIES	UNITS	LIMITS
BaSO₄	%	98.5 Min.
105ºC volatile	%	0.30 Max.
Soluble substance in water	%	0.30 Max.
Content of Fe	%	0.004 Max.
Whiteness	—-	98.5 Min.
Oil absorption	g/100g	10-30
PH value	—-	6.5-9.0
Remained on 325 mesh	%	0.02 Max.
Conclusion	—-	Conforms

Sodium carbonate Basic information
Product Name:	Sodium carbonate
CAS:	497-19-8
MF:	CH2O3.2Na
MW:	105.99
EINECS:	231-867-5
Sodium carbonate Chemical Properties
Melting point	851 °C (lit.)
Boiling point	1600°C
density	2.53
refractive index	1.535
storage temp.	15-25°C
solubility	H2O: 1 M at 20 °C, clear, colorless
form	Solid
Specific Gravity	2.532
color	White
PH	11.16 (4g/l, H2O, 25℃)
pka	(1) 6.37, (2) 10.25 (carbonic (at 25℃)
Water Solubility	22 g/100 mL (20 ºC)
λmax	λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Sensitive	Hygroscopic
Merck	148,596
BRN	4154566

Sodium carbonate CAS:497-19-8

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