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无水碳酸钠,Sodium carbonate;anhydrous, free-flowing, Redi-Dri™, 99.999% trace metals basis

别名:碳酸钠;碳酸二钠盐;纯碱;Calcined soda, Carbonic acid disodium salt, Soda ash

线性分子式: Na2CO3 CAS号: 497-19-8 分子量: 105.99 Beilstein: 4154566 MDL编号: MFCD00003494
制造商品牌: 西格玛 Sigma-Aldrich
货号(SKU): 931136
CAS号: 497-19-8
MDL号: MFCD00003494
签订合同 √ 正规发票 √ 技术支持 √ 质量保障 √ 全程可追溯 √
¥1,777.66

说明

一般描述

Sodium carbonate is a white salt. It is hygroscopic, soluble in water, and soluble in some polar organic solvents like glycerol and ethylene glycol, but insoluble in acetone and dry alcohols. One of only a few water-soluble carbonate salts, sodium carbonate is frequently used as a source for the carbonate anion or carbon dioxide.
Sodium carbonate is made industrially by the Solvay process using brine and limestone. First carbon dioxide is generated by calcining limestone (calcium carbonate). Then carbon dioxide is bubbled through brine (concentrated NaCl) treated with ammonia to precipitate sodium bicarbonate. Heating the sodium bicarbonate to 200 C produces sodium carbonate, water, and carbon dioxide.
 

应用

Sodium carbonate has many common applications. It is used in the manufacture of soap and paper because it serves as a moderate base. It is used to manufacture of sodium-containing compounds like borax and it is used to soften water and cleaning scale from hard water. Sodium carbonate is also used in glass-making as a flux for silica to lower the melting point. So called soda-lime glass has been the most common form of glass for centuries. Sodium carbonate is often used a source of carbonate to prepare metal carbonates, which can be calcined to prepare nanostructured metal oxides, such as cobalt oxides[1], metal-organic frameworks (MOF)[2], and metal nanoparticles.[3] Sodium carbonate is also used as a basic catalyst for the synthesis of carbon aerogels, especially in the sol-gel polycondensation of formaldehyde and resorcinol.[4] [5] Sodium carbonate is often used in organic chemistry as a moderately strong base. In many instances it is preferable to sodium hydroxide as a base because it is milder and safer to handle. Some common uses of sodium carbonate in organic chemistry:
  • Base of choice for palladium-catalyzed reactions like Suzuki couplings[6]
  • Used in reactions, especially alkylation reactions, that require a base to neutralize acids that form during reactions
  • Base for aqueous basic washes of organic layer during workup
  • Standard for titrations since it is easy to weigh and relatively safe to handle
Sodium carbonate is a widely used reagent in biochemistry as a buffer component in chromatography, capillary electrophoresis, and enzyme catalysis. Scientists have found that cold solutions of sodium carbonate are ideal for the isolation of cell membranes, membrane proteins, and hydrophobic proteins.[7]
 
Redi Dri is an innovative packaging system that prevents absorption of environmental moisture by anhydrous & hydroscopic salts during transport and chemical storage without addition of anti-caking agents, preserving the compounds′ quality assured, free-flowing nature. Redi-Dri also provides a conveniently resealable storage container as a simpler and safer-to-use alternative to one-time-use packaging such as ampules.

While the Redi-Dri packaging system does offer desiccating properties, opening and closing of the Redi-Dri bottle is still intended to occur under controlled atmosphere to maintain the highest quality of your MilliporeSigma product.
 

生化/生理作用

缓冲液成分,可用于去除外周膜蛋白。
 

特点和优势

  • Longer shelf-life as a free-flowing powder without addition of anti-caking agents
  • Slower absorption of environmental moisture
  • Conveniently resealable storage container in contrast to ampule
  • Faster dissolution compared to clumped materials
  • No need to chip, chisel, or grind clumped salts
  • While the Redi-Dri packaging system does offer desiccating properties, opening and closing of the Redi-Dri bottle is still intended to occur under controlled atmosphere to maintain the highest quality of your MilliporeSigma product.

法律信息

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
 
 

属性

等级

anhydrous

质量水平

产品线

Redi-Dri

测定

99.999% trace metals basis

形式

powder

质量

free-flowing

杂质

≤15.0 ppm (trace metals analysis)

mp

851 °C (lit.)

溶解性

H2O: soluble ((lit.))
acetone: insoluble ((lit.))
alcohols: insoluble ((lit.))
glycerol: soluble ((lit.))

SMILES string

O=C(O[Na])O[Na]

InChI

1S/CH2O3.2Na/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2

InChI key

CDBYLPFSWZWCQE-UHFFFAOYSA-L

 

安全信息

象形图

Exclamation mark

警示用语:

Warning

危险声明

危险分类

Eye Irrit. 2

储存分类代码

13 - Non Combustible Solids

WGK

WGK 1

个人防护装备

dust mask type N95 (US), Eyeshields, Gloves

商品规格
属性名称属性值
储存温度 Storage temp.常温阴凉避光
全球实时库存 Availability √美国St. Louis ≥ 50 | 欧洲Eur. ≥ 12 | 東京Tokyo ≥ 20 | 香港与北京 ≥ 50
商品标签 [tags]