???? ?? ??

???? ?? C??? ??, ??, ??

??

The anhydrate is a white to yellow crystalline solid with a density of 2.651 g/cm3. Contact with this salt will irritate the eyes, skin and mucus membranes. If ingested, it is toxic in sufficient quantities. When formed from an aqueous solution, the tetrahydrate is obtained. Calcium perchlorate tetrahydrate has the formula Ca(ClO4)2·4H2O and the CAS number 15627-86-8. Its molecular weight is 311.04 g/mol and its density is 2.651 g/cm3. Its solubility in water is 188 g/ 100 ml at 20°C.

??? ??

white crystal(s); oxidizing agent [HAW93]

??

Calcium perchlorate hydrate is used as a pharmaceutical intermediate.

?? ??

Calcium perchlorate can be prepared by reacting calcium carbonate with a solution of perchloric acid:
CaCO3＋ HClO4→Ca(ClO4)2＋ CO2
This salt can also be prepared by an electrochemical method in water whereby calcium perchlorate is formed from calcium chlorate in which a platinum anode and a rotating stainless steel cathode is employed.

?? ??

White to yellow crystalline solid. Density 2.651 g / cm3. Contact may irritate skin, eyes, and mucous membranes. May be toxic by ingestion.

??? ?? ??

Water soluble.

?? ???

A strong oxidizing agent. Can react with reducing agents to generate heat and products that may be gaseous (causing pressurization in closed containers). The products may themselves be capable of further reactions (such as combustion in the air). Redox reactions can be rapid or even explosive, but often requires initiation (heat, spark, catalyst, addition of a solvent). Consequently explosive mixtures with reducing agents often persist unchanged for long periods. Such systems are typically mixtures of solids, but may involve any combination of physical states. Can react violently with active metals, cyanides, esters, and thiocyanates. May cause the acceleration of the burning of combustible materials. Prolonged exposure to heat of flames may result in an explosion.

????

Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.

????

These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.

???? ?? ?? ?? ? ???

???

?? ??

???? ?? ?? ??

???	??	???	??	?? ?	??
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22963	58
Shaanxi Didu New Materials Co. Ltd	+86-89586680 +86-13289823923	1026@dideu.com	China	8670	58
Hebei Weibang Biotechnology Co., Ltd	+8617732866630	bess@weibangbio.com	China	18147	58
Aladdin Scientific	+1-+1(833)-552-7181	sales@aladdinsci.com	United States	57505	58
Mainchem Co., Ltd.	+86-0592-6210733	sale@mainchem.com	China	32343	55
Chemwill Asia Co.,Ltd.	86-21-51086038	chemwill_asia@126.com	CHINA	23912	58
Meryer (Shanghai) Chemical Technology Co., Ltd.	021-61259108 18621169109	market03@meryer.com	China	40228	62
Alfa Aesar	400-6106006	saleschina@alfa-asia.com	China	30123	84
Energy Chemical	021-021-58432009 400-005-6266	sales8178@energy-chemical.com	China	44689	61
Shanghai Aladdin Bio-Chem Technology Co.,LTD	400-6206333 18021050169	market@aladdin-e.com	China	25003	65

???? ?? ?? ??: