应用
Sodium carbonate is commonly used as an inorganic base and a buffer component in several synthetic organic transformations in both chemical industries and research laboratories. Often used as an electrolyte, sodium carbonate acts as a very good conductor in the process of electrolysis. Apart from being used as a common chemical/biological/biotechnological laboratory reagent, it is also used as a water softener in laundering, processing wood pulp, cleaners, and making glass. It can be used for standardization of acids, and qualitative testing of cations. In dyeing with fiber-reactive dyes, sodium carbonate is used to ensure proper chemical bonding of the dye with cellulose fibers.

Grade Specifications
Maximum level of impurities: Insoluble matter 0.01%, Loss on drying at 285� 1.0%, Cl 0.001%, Nitrogen compounds (as N) 0.001%, PO₄ 0.001%, SiO₂ 0.005%, Sulfur compounds (as SO₄) 0.003%, Ammonium hyrdoxide precipitate 0.01%, Ca 0.02%, Mg 0.004%, Heavy Metals (as Pb) 5ppm, Fe 5ppm, K 0.005%

备注
m.p. 851° (begins to lose CO{2} at 400°). For use as an alkalimetric standard, material should be heated at 285° for 2 hrs.It is hygroscopic in nature, and absorbs moisture from air. On heating, it begins to lose carbon dioxide at about 400 °C.

基本信息

MDL
MFCD00003494

EINECS
207-838-8

分子式
Na₂CO₃

分子量
105.99

密度
2.53

折射率
1.535

灵敏度
Hygroscopic. Ambient temperatures.

形态
Granular

溶解性
Soluble in water. Slightly soluble in aq. alcohol. Insoluble in carbon disulphide, acetone, and alkyl acetates.

Beilstein
4154566

Merck
14,8596

GHS危害和防范说明

GHS符号

Hazard Statements
H319
Causes serious eye irritation.

Precautionary Statements
P280i-P264-P305+P351+P338-P337+P313
Wear eye/face protection.Wash thoroughly after handling.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.If eye irritation persists: Get medical advice/attention.

安全信息

危险类别
36
Irritating to eyes.

安全等级
22-26
Do not breathe dust.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

RTECS
VZ4050000

TSCA
是