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カルシウムオキシド 化学構造式
生石灰;カルシウムオキシド;酸化カルシウム;酸化カルシウム,3N;石灰;酸化Ca;生石灰 (別名:酸化カルシウム);酸化カルシウム PURISS.,MEETS ANALYTICAL SPECIFICATION OF FCC,96-100.5% (EX IGNITED SUBSTANCE),POWDER (FINE);酸化カルシウム REAGENT GRADE;酸化カルシウム(粉末);酸化カルシウム(塊状);酸化カルシウム, 99.9%;酸化カルシウム, 99.95% (metals basis);酸化カルシウム, 98%;酸化カルシウム (99.95%-Ca);酸化カルシウム (JP17)
Calcium oxide
MOL File:

カルシウムオキシド 物理性質

融点 :
2570 °C
沸点 :
2850 °C(lit.)
比重(密度) :
3.3 g/mL at 25 °C(lit.)
屈折率 :
闪点 :
貯蔵温度 :
Store at RT.
1.65g/l Risk of violent reaction.
外見 :
White to yellow-very slightly beige
12.6 (H2O, 20℃)(saturated solution)
水溶解度 :
Sensitive :
Air & Moisture Sensitive
Merck :
Stability Stable, but absorbs carbon dioxide from the air. Incompatible with water, moisture, fluorine, strong acids.
CAS データベース:
1305-78-8(CAS DataBase Reference)
Calcium monoxide(1305-78-8)
Calcium oxide (1305-78-8)
  • リスクと安全性に関する声明
  • 危険有害性情報のコード(GHS)
主な危険性  C,Xi
Rフレーズ  34-41-37/38
Sフレーズ  26-36/37/39-45-25-39
RIDADR  1910
WGK Germany  1
RTECS 番号 EW3100000
国連危険物分類  8
容器等級  III
HSコード  28259019
有毒物質データの 1305-78-8(Hazardous Substances Data)
化審法 一般化学物質
安衛法 57,57-2
注意喚起語 Danger
コード 危険有害性情報 危険有害性クラス 区分 注意喚起語 シンボル P コード
H315 皮膚刺激 皮膚腐食性/刺激性 2 警告 P264, P280, P302+P352, P321,P332+P313, P362
H318 重篤な眼の損傷 眼に対する重篤な損傷性/眼刺激 性 1 危険 P280, P305+P351+P338, P310
H335 呼吸器への刺激のおそれ 特定標的臓器毒性、単回暴露; 気道刺激性 3 警告
P261 粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。
P280 保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。
P304+P340 吸入した場合:空気の新鮮な場所に移し、呼吸しやすい 姿勢で休息させること。
P305+P351+P338 眼に入った場合:水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。
P405 施錠して保管すること。

カルシウムオキシド 価格 もっと(30)

メーカー 製品番号 製品説明 CAS番号 包装 価格 更新時間 購入
富士フイルム和光純薬株式会社(wako) W01ALF044776
Calcium oxide, 99.95% (metals basis)
1305-78-8 50g ¥19700 2018-12-26 購入
富士フイルム和光純薬株式会社(wako) W01ALF044776
Calcium oxide, 99.95% (metals basis)
1305-78-8 250g ¥81600 2018-12-26 購入
関東化学株式会社(KANTO) 07087-08 酸化カルシウム,3N >99.9%(Im.S.)
Calcium oxide, 3N >99.9%(Im.S.)
1305-78-8 500g ¥19500 2018-12-13 購入
関東化学株式会社(KANTO) 07087-01 酸化カルシウム >97.0%(T)
Calcium oxide >97.0%(T)
1305-78-8 500g ¥4000 2018-12-13 購入
Sigma-Aldrich Japan 208159 ReagentPlus?, 99.9% trace metals basis
Calcium oxide ReagentPlus?, 99.9% trace metals basis
1305-78-8 100g ¥7200 2018-12-25 購入

カルシウムオキシド 化学特性,用途語,生産方法






水に微溶 (0.13g/100g,10℃)




鉄鋼製造用,大気汚染防止?排水処理用,パルプ?紙製造用,カーバイド原料,マグネシアクリンカー?金属マグネシウム製造原料,建築土壌安定用,医薬用,農薬 (NITE CHRIP)










Calcium oxide (CaO, CAS Reg. No. 1305-78-8) is also known as lime, quick lime, burnt lime, or calx. Lime does not occur naturally since it reacts so readily with water (to form hydrated lime) and carbon dioxide (to form limestone). It is produced from calcium carbonate, limestone, or oyster shells by calcination at temperatures of 1,700-2,450℃.
Calcium Oxide is a solid with a very high affinity for water - it will react with water in the air, or in your skin or anywhere it can and form calcium hydroxide. This reaction is exothermic so it releases a lot of heat while it is reacting - there fore as well as being corrosive and causing significant skin irritation, calcium oxide's reaction with water can also cause burns. Calcium hydroxide is basically hydrated calcium oxide. It is alkali so can be corrosive. In solution it makes limewater.
CaO is not found pure in nature but rather is contained in various abundant minerals (i.e. calcite, aragonite, limestone, marble) but vary greatly in their purity (impurities usually include magnesia, iron, alumina, silica, sulfur). Of these iron and sulfur are most troublesome (i.e. where clarity is important in glass). Lime minerals vary in the degree of crystallization and cohesion of the crystalline mass and the homogeneity of the matrix.
Calcium oxide is the principle flux in medium and high temperature glazes, beginning its action (within the glaze) around 1100C. It must be used with care in high-fire bodies because its active fluxing action can produce a body that is too volatile (melting if slightly overfired).
Lime, or calcium oxide, is a principle ingredient in the production of Portland cement, the basis for most mortars and concrete. Hydrated or ‘slaked’ lime is the chemical calcium hydroxide. This chemical is also used in mortars. Both types of lime are strong bases and are also used in food production (calcium hydroxide is commonly used in making corn tortillas), petroleum refining and sewage treatment. In the household it is used by aquarium hobbyists to add bioavailable calcium to fish tanks. It is also found in hair relaxers.


white to grey solid


Calcium oxide, CaO, occurs as white or grayish-white lumps or granular powder. The presence of iron gives it a yellowish or brownish tint.


This citrus plant is widespread and extensively cultivated, especially in Central America, Mexico, Florida, Haiti and Barbados; it also grows well in India. It is cultivated to a limited extent in Calabria (Italy). The varieties from the different countries of origin can be either sweet or sour. The sour varieties are the most important for extractive purposes. This plant (morphologically similar to those of the citrus family) has the peculiarity of yielding flowers and fruits year-round in Central America. The tree is propagated from seeds or by grafting onto bitter orange. The maximum fruit yield occurs after 10 years. The parts used are the leaves, small unripe fruits, rinds, juice and twigs. Lime has an intensely fresh, citrus aroma and an astringent, sweet-sour flavor


Calcium oxide is a white caustic crystalline alkali substance that goes by the common name lime. The term lime is used both generically for several calcium compounds and with adjectives to qualify different forms of lime. This entry equates lime, also called quicklime or burnt lime, with the compound calcium oxide. Hydrated lime, made by combining lime with water, is calcium hydroxide and is often referred to as slaked lime (Ca(OH)2). Dolomite limes contain magnesium as well as calcium. Limestone is the compound calcium carbonate. The term lime comes from the Old English word l?m for a sticky substance and denotes lime’s traditional use to produce mortar. Calx was the Latin word for lime and was used to name the element calcium.


Calcium oxide dates from prehistoric times. It is produced by heating limestone to drive off carbon dioxide in a process called calcination: CaCO3(s) CaO(s) + CO2(g). At temperatures of several hundred degrees Celsius, the reaction is reversible and calcium oxide will react with atmospheric carbon dioxide to produce calcium carbonate. Efficient calcium oxide production is favored at temperatures in excess of 1,000°C. In prehistoric times limestone was heated in open fires to produce lime. Over time, lined pits and kilns were used to produce lime. Brick lime kilns were extensively built starting in the 17th century and the technology to produce lime has remained relatively constant since then.


The major uses of lime are metallurgy, flue gas desulfurization, construction, mining, papermaking, and water treatment. About one third of calcium oxide production in the United States is used for metallurgical processes, principally in the iron and steel industry. Calcium oxide is used to remove impurities during the refining of iron ore. Calcium oxide combines with compounds such as silicates, phosphates, and sulfates contained in iron ores to form slag. Lime is also used for purification in other metal refining and to control pH in mining processes such as leaching and precipitation. The calcium oxide is also used in remediation of mine wastes to recover cyanides and to neutralize acid mine drainage.


In bricks, plaster, mortar, stucco and other building and construction materials; manufacture of steel, aluminum, magnesium, and flotation of non-ferrous ores; manufacture of glass, paper, Na2CO3 (Solvay process), Ca salts and many other industrial chemicals; dehairing hides; clarification of cane and beet sugar juices; in fungicides, insecticides, drilling fluids, lubricants; water and sewage treatment; in laboratory to absorb CO2 (the combination with NaOH is known as soda-lime, q.v.).


Calcium Oxide is a general food additive consisting of white granules or powder of poor water solubility. it is obtained by heating limestone (calcium carbonate) in a furnace. it is also termed lime or quicklime. it is used as an anticaking agent, firming agent, and nutritive supple- ment in applications such as grain products and soft candy.


ChEBI: A member of the class of calcium oxides of calcium and oxygen in a 1:1 ratio.


Calcium oxide is commercially obtained from limestone. The carbonate is roasted in a shaft or rotary kiln at temperatures below 1,200°C until all CO2 is driven off. The compound is obtained as either technical, refractory or agri cultural grade product. The commercial product usually contains 90 to 95% free CaO. The impurities are mostly calcium carbonate, magnesium carbon ate, magnesium oxide, iron oxide and aluminum oxide.


Leaves contain ascorbic acid, bergapten, coumarins, citropten, isopimpinellin. Fruits contain: ascorbic acid, α-bergamotene, bergamottin, bergapten, α-bisabolene, β-bisabolene, borneol, cadinen, calcium, camphene, β-carotene, caryophyllene, 1,4-cineole, 1,8-cineole, citral, citric acid, citronellal, citropten, copper, p-cymene, decanal, decanol, decyl-acetate, dimethoxycoumarin, α-p-dimethyl-styrene, dodecanal, fenchol, furfural, geraniol, geranyl-acetate, hesperidin, iron, isoimperatorin, isopimpinellin, levarterenol, limonene, d-limonene, linalool, linoleic acid, α-linolenic acid, lysine, malic acid, malonic acid, methionine, 5-methoxy-psoralen, methyl-heptenone, myrcene, myristic acid, neral, neryl-acetate, neryl-formate, niacin, nonanal, nonane, nonanol, nootkatone, octanal, octanoic acid, octanol, oxalic acid, palmitic acid, palmitoleic acid, pantothenic acid, α-phellandrene, β-phellandrene, phlobotannin, phosphorus, α-pinene, β-pinene, potassium, quinic acid, riboflavin, sabinene, γ-selinene, sodium, stearic acid, succinic acid, α-terpinene, γ-terpinene, terpinen-1-ol, terpinen-4-ol, α-terpineol, β-terpineol, terpinolene, thiamine, α-thujene, thymyl-methyl-ether, tridecane, 2,6,6-trimethyl-2-vinyl-tetrahydropyran, α,α-p-trimethylbenzyl-alcohol, tryptophan, undecane, xanthophylls, zinc. Fruit peel contains cutin.

Aroma threshold values

Aroma at 1.0%: intense, high impacting fresh sweet juicy lime, citral with a distilled lime note, cool and refreshing with green juicy nuances.

Taste threshold values

Taste characteristics at 10 ppm in 5% sugar and 0.1% CA; intense fresh tangy lime juice, citrus citral candy lime character with notes of West Indian lime


An odorless, white or gray-white solid in the form of hard lumps. A strong irritant to skin, eyes and mucous membranes. Used in insecticides and fertilizers.


Crumbles on exposure to moist air. Reacts with water to form corrosive calcium hydroxide, with evolution of much heat. Temperatures as high as 800° C have been reached with addition of water (moisture in air or soil). The heat of this reaction has caused ignition of neighboring quantities of sulfur, gunpowder, wood, and straw [Mellor 3: 673 1946-47].


A base and an oxidizing agent. Neutralizes acids with generation of heat. Nonflammable, but will support combustion by liberation of oxygen, especially in the presence of organic materials. Reacts very violently with liquid hydrofluoric acid [Mellor 2, Supp. 1:129 1956]. Reacts extremely violently with phosphorus pentaoxide when reaction is initiated by local heating [Mellor 8 Supp.3:406 1971].


Evolves heat on exposure to water. Danger- ous near organic materials. Upper respiratory tract irritant.


Causes burns on mucous membrane and skin. Inhalation of dust causes sneezing.


Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases and runoff. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.


Calcium oxide (CaO) is a white powder with a neutralizing value or calcium carbonate equivalent (CCE) of 179%, compared to 100% for calcium carbonate (CaCO3). For quick results, either calcium oxide or calcium hydroxide [Ca(OH)2] is used. Calcium oxide is also known as lime, unslaked lime, burned lime or quicklime. Roasting CaCO3 in a furnace makes calcium oxide. A complete mixing of calcium oxide with soil is difficult because it cakes due to absorption of water.


Lime is a white caustic alkaline substance. It consists of calcium oxide which is obtained by heating limestone, and has a high neutralizing value.


Lime is the most widely used reagent in the mineral industry for flotation of sulfides and, in some cases, non-sulfide minerals. The word “lime” is a general term used to describe any kind of calcareous material or finely divided form of limestone and dolomite. In more strict chemical terms, lime is calcinated limestone known as calcium oxide (CaO), quicklime or unslaked lime.The slaked or hydrated lime Ca(OH)2 is the form of lime primarily used in mineral flotation. Production of high-calcium lime is based on calcination of limestone at a temperature of 1100–1300 °C in kilns.
CaCO3+heat--->CaO+CO2 For high-magnesium (dolomitic) limestone, the calcination reaction (at 1000–1200 °C) is CaCO3·MgCO3 (limestone) + heat--->CaOMgO (quicklime-2CO2)


A caustic and irritating material. See also CALCIUM COMPOUNDS. A common air contaminant. A powerful caustic to living tissue. The powdered oxide may react explosively with water. Mixtures with ethanol may igmte if heated and thus can cause an air-vapor explosion. Violent reaction with (I3203 + CaCl2) interhalogens (e.g., BF3, CIF3), F2, HF, P2O5 + heat, water. Incandescent reaction with liquid HF. Incompatible with phosphoms(V) oxide.


Calcium oxide is used as a refractory material; a binding agent in bricks; plaster, mortar, stucco, and other building materials. A dehydrating agent, a flux in steel manufacturing, and a labora


UN1910 Calcium oxide, Hazard class: 8; Labels: 8-Corrosive material.


The water solution is a medium strong base. Reacts with water, forming calcium hydroxide and sufficient heat to ignite nearby combustible materials. Reacts violently with acids, halogens, metals.


Pretreatment involves neutralization with hydrochloric acid to yield calcium chloride. The calcium chloride formed is treated with soda ash to yield the insoluble calcium carbonate. The remaining brine solution may be discharged into sewers and waterways

カルシウムオキシド 上流と下流の製品情報



カルシウムオキシド 生産企業

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  • 生石灰
  • カルシウムオキシド
  • 酸化カルシウム
  • 酸化カルシウム,3N
  • 石灰
  • 酸化Ca
  • 生石灰 (別名:酸化カルシウム)
  • 酸化カルシウム REAGENT GRADE
  • 酸化カルシウム(粉末)
  • 酸化カルシウム(塊状)
  • 酸化カルシウム, 99.9%
  • 酸化カルシウム, 99.95% (metals basis)
  • 酸化カルシウム, 98%
  • 酸化カルシウム (99.95%-Ca)
  • 酸化カルシウム (JP17)
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