应用
Calcium oxide has wide-ranging utility in industry. It is used in making porcelain, cements, mortars, and glass. It is also employed in flue-gas desulfurization in power plants, purifying sugar, drying the solvents/reagents, preparing bleaching powder, calcium carbide, and calcium cyanamide. It also finds use in water softeners, chemical recovery at Kraft pulp mills, biodiesel production, and in petroleum industry for the detection of traces of water. In agriculture it is used to restore the pH of acidic soils (liming). It is useful as a basic catalyst & acid scavenger in several organic transformations, for example, in Arndt-Eistert Synthesis of alpha-diazoketones, synthesis of heterocycles and oximes.
备注
Reaction of calcium oxide with water is highly exothermic, & can ignite combustible materials. The aqueous solution of calcium oxide spontaneously reacts with carbon dioxide from air to form calcium carbonate.
基本信息
MDL
MFCD00010911
EINECS
215-138-9
分子式
CaO
分子量
56.08
熔点
2572°
沸点
2850°
密度
3.37
折射率
1.8300
灵敏度
Moisture Sensitive. Air Sensitive. Store under Argon. Ambient temperatures.
形态
Powder
溶解性
Slightly soluble in water. Insoluble in ethanol. Soluble in glycerol.
Merck
14,1686
GHS危害和防范说明
GHS符号
Hazard Statements
H315-H318-H335
Causes skin irritation.Causes serious eye damage.May cause respiratory irritation.
Precautionary Statements
P261-P280a-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray.Wear protective gloves and eye/face protection.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.Store locked up.Dispose of contents/container in accordance with local/regional/national/international regulations.
安全信息
危险等级
8
包装组
III
危险类别
37/38-41
Irritating to respiratory system and skin.Risk of serious damage to eyes.
安全等级
26-37/39-60
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable gloves and eye/face protection.This material and its container must be disposed of as hazardous waste
RTECS
EW3100000
TSCA
是
