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Sodium carbonate(CAS#497-19-8) Featured Image
  • Sodium carbonate(CAS#497-19-8) 1

Sodium carbonate(CAS#497-19-8)

Chemical Property:

Molecular Formula CH2O3.2Na
Molar Mass 105.99
Density 2.53
Melting Point 851 °C (lit.)
Boling Point 1600°C
Water Solubility 22 g/100 mL (20 ºC)
Solubility H2O: 1M at20°C, clear, colorless
Appearance White powder or granule
Specific Gravity 2.532
Color White
Maximum wavelength(λmax) ['λ: 260 nm Amax: 0.01',
, 'λ: 280 nm Amax: 0.01']
Merck 14,8596
BRN 4154566
pKa (1) 6.37, (2) 10.25 (carbonic (at 25℃)
PH 10.52(1 mM solution);10.97(10 mM solution);11.26(100 mM solution);
Storage Condition 15-25°C
Stability Stable. Incompatible with powdered alkaline earth metals, aluminium, organic nitro compounds, fluorine, alkali metals, nonmetallic oxides, concentrated sulfuric acid, oxides of phosphorus.
Sensitive Hygroscopic
Refractive Index 1.535
MDL MFCD00003494
Physical and Chemical Properties properties a pure product of anhydrous sodium carbonate is a white powder or fine particles.
melting point 851 ℃
relative density 2.532
soluble in water, the aqueous solution is strongly alkaline. At 35.4 deg C the solubility of the maximum, per 7.0g water can dissolve 49.7g sodium carbonate (0 deg C for 100g, 45.5 deg C for g). Slightly soluble in anhydrous ethanol, insoluble in propanol.
Use Basic chemical raw materials, widely used in medicine, paper, metallurgy, glass, textile, dye and other industries, used as food industry fermentation agent

Product Detail

Product Tags

Risk Codes R32 – Contact with acids liberates very toxic gas
R36 – Irritating to the eyes
R51/53 – Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
R36/37/38 – Irritating to eyes, respiratory system and skin.
R41 – Risk of serious damage to eyes
R37/38 – Irritating to respiratory system and skin.
Safety Description S36/37 – Wear suitable protective clothing and gloves.
S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S22 – Do not breathe dust.
S36 – Wear suitable protective clothing.
S39 – Wear eye / face protection.
WGK Germany 2
RTECS XN6476000
FLUKA BRAND F CODES 3
TSCA Yes
HS Code 28362000
Toxicity LD50 orally in Rabbit: 4090 mg/kg

 

Introduction

No smell. It has an alkali taste. It’s hygroscopic. The exposed air gradually absorbs 1mol/L water (about 15%). Carbon dioxide is lost at 400 ℃. Decompose and effervescent in case of acid. Soluble in water (3.5 parts at room temperature and 2.2 parts at 35 ℃) and glycerol, insoluble in alcohol. The aqueous solution is strongly alkaline, pH11.6. Median lethal dose (30 days) (mice, abdominal cavity) 116.6 mg/kg. It’s irritating.

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