商品名：硫酸钡

别 名：硫酸钡Barium sulfate ,Artificial heavy spar ,
Blanc fixe ,Barium sulfate precipitated ,Synthetic barytes ,
Terraponderosa ,Permanent white

英文名：Barium sulfate

产 地：湖南

Cas号：7727-43-7

MDL：MFCD00003455

Beilstein：

EINECS：231-784-4

分子结构：

分子式：BaSO4

分子量：233.3900

备注：

性状：白色重质细微粉末。无臭。无味。1600℃以上分解。溶于热浓硫酸,几乎不溶于水、乙醇和稀酸。重晶石为天然的硫酸钡,人工合成者由硫酸钠与钡盐溶液共同作用而得。相对密度4.25～4.5。沸点1149℃。

质量标准：GB/T1269-77
项目ltem                                      分析纯     化学纯
                                               (AR)       (CP)
盐酸可溶物Soluble in hydrochloric acid      ≤ 0.15       0.25
灼烧失重Loss on ignition,%                  ≤ 1.5        1.5
氯化物(Cl)Chloride,%                        ≤ 0.005      0.02
可溶性硫酸盐(以SO₄计)Soluble sulfate,%      ≤ 0.005      0.03
氮化合物(N)Nitrogen compounds,%             ≤ 0.005      0.01
铁(Fe)Iron,%                                ≤ 0.0005     0.001
砷(As)Arsenic,%                             ≤ 0.0001     0.001
可溶性的钡盐(以Ba计)Soluble barium salt,%   ≤ 0.0001     0.0005
重金属(以Pb计)Heavy metals,%                ≤ 0.0005     0.001


超细硫酸钡:

BaSO4纯度Purity                              ≥99.0%
挥发物Volatile matter                       0.2% (105℃)
PH值                                         7-9
亮度brightness                               99
平均粒径particle size                        1μm
密度Density g/ml                             4.4
折射指数Refractive index                     1.64
筛余screen floating                         〈0.004%


品级Grade                               沉淀硫酸钡  
                                    (precipitated, powder)
loss on ignition                          ≤2%  
particle size                            2.4-4.8 μm
chloride (Cl-):                          ≤1000 ppm
Ca:                                      ≤1000 ppm
Cd:                                      ≤50 ppm
Co:                                      ≤50 ppm
Cu:                                      ≤50 ppm
Fe:                                      ≤50 ppm
K:                                       ≤100 ppm
Na:                                      ≤1000 ppm
Ni:                                      ≤50 ppm
Pb:                                      ≤50 ppm
Zn:                                      ≤500 ppm


品级Grade                           美国药典USP级  
                                         (USP)
鉴别试验IDENTITY                          PASS
PH TEST                                   3.5 - 10.0
硫化物LIMIT OF SULFIDE                    ≤ 0.5 PPM
酸溶性物质LIMIT OF ACID-SOLUBLE SUBSTANCE ≤ 0.3%
可溶性钡盐LIMIT OF SOLUBLE BARIUM SALTS   ≤ 0.001%
重金属HEAVY METALS                        ≤ 0.001%
残留溶剂RESIDUAL SOLVENTS                 MEETS THE REQUIREMENTS
含量ASSAY                                 97.5% ～ 100.5%


99.99%:


外观Appearance                            White powder
干燥失重Loss on Ignition                  ≤1.00 %（800°C，1hour）
ICP: Confirms Ba and S Components         Confirmed
痕量金属Trace Metal Analysis              ≤200.0 ppm
纯度Purity(metals basis)                  ≥99.99 %

存储：密封保存

用途：用作分析试剂。测定土壤消态氮。用于照相纸,人造象牙制造。橡胶填充剂。炼铜熔剂。

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