바륨 셀레네이트

바륨 셀레네이트 속성

바륨 셀레네이트 C화학적 특성, 용도, 생산

개요

Barium selanate has the molecular formula of BaSeO4 and the molecular weight of 280.2748 g/mol. It can be prepared by reacting sodium selenate with barium chloride in solution:
BaCl2(aq)+ Na2SeO4(aq) ? BaSeO4+ 2NaCl(aq)
Barium selenate is slightly soluble in water at 0.0052 g/100 ml at 20°C. Its CAS number is 7787-41-9. It is a white rhombic crystal which decomposes when heated beyond about 425°C. It is slightly soluble in water at 0.0152 g/100 ml at 20°C. Its solubility product is 3.40×10^-8.
The heat of formation of barium selenate is: △H₂₉₈ BaSeO4 = -249.0 kcal/mol (-1041.8 kJ/mol). As a result of the measurements, it has been found that for the reaction:
Basolid+ Sesolid+ 2O2 = BaSeO4
△H₂₉₈ = -279.2 cal/mol
△F₂₉₈ = -249.1 cal/mol

화학적 성질

orthorhombic crystal(s); preparation: heating BaCO3 and Se [MER06]

반응 프로필

Inorganic oxidizing agents can react with reducing agents to generate heat and products that may be gaseous (causing pressurization of closed containers). The products may themselves be capable of further reactions (such as combustion in the air). The chemical reduction of materials in this group can be rapid or even explosive, but often requires initiation (heat, spark, catalyst, addition of a solvent). Explosive mixtures of inorganic oxidizing agents with reducing agents often persist unchanged for long periods if initiation is prevented. Such systems are typically mixtures of solids, but may involve any combination of physical states. Some inorganic oxidizing agents are salts of metals that are soluble in water; dissolution dilutes but does not nullify the oxidizing power of such materials. Organic compounds in general have some reducing power and can in principle react with compounds in this class. Actual reactivity varies greatly with the identity of the organic compound. Inorganic oxidizing agents can react violently with active metals, cyanides, esters, and thiocyanates. Explosives often consist of an inorganic oxidizing agent mixed in intimate contact with a reducing agent. Gunpowder is such a mixture. Other examples are a mixture of sugar (an organic compound) plus sodium chlorate and magnesium (an inorganic reducing agent) plus barium peroxide.

건강위험

Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

화재위험

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.

바륨 셀레네이트 준비 용품 및 원자재

원자재

준비 용품

바륨 셀레네이트 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28180	58
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22968	58
Shaanxi Didu New Materials Co. Ltd	+86-89586680 +86-13289823923	1026@dideu.com	China	9116	58
3B Pharmachem (Wuhan) International Co.,Ltd.	821-50328103-801 18930552037	3bsc@sina.com	China	15848	69
Alfa Aesar	400-6106006	saleschina@alfa-asia.com	China	30132	84
Chizhou Kailong Import and Export Trade Co., Ltd.		xg01_gj@163.com	China	9503	50
Guangzhou Jhd Chemical Reagent Co., Ltd.	020-84383047	sales@jhd.com.cn	China	9190	65
Guangdong Wengjiang Chemical Reagent Co., Ltd.	0751-2886766 13927870850	3001267247@qq.com	China	10067	58
Hebei Zhenjia new material Co., LTD	0319-5925599 13315915972	13313090628@163.com	China	3489	58
Shaanxi DIDU pharmaceutical and Chemical Co., Ltd	17691182729 18161915376	1046@dideu.com	China	10008	58

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