品名 | 规格 | 包装 | 单价 | 货期 |
硫酸钡 | USP | 500g | 334.4元 | 促销 |
硫酸钡 | precipitated, powder | 25Kg | 1298元 | 现货 |
硫酸钡 | precipitated, powder | 500g | 77元 | 促销 |
硫酸钡 | 99%,1μm | 25Kg | 968元 | 现货 |
硫酸钡 | 99%,1μm | 500g | 79.2元 | 促销 |
硫酸钡 | 4N | 25g | 107.8元 | 咨询客服 |
硫酸钡 | SP | 25g | 107.8元 | 咨询客服 |
硫酸钡 | AR | 500g | 51.7元 | 促销 |
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%
USP级
ASSAY 97.5 - 100.5 %
pH OF AN AQUEOUS SUSPENSION 3.5 - 10.0
SULFIDE (S) -- 0.5 ug/g
ACID-SOLUBLE SUBSTANCES -- 0.3 %
SOLUBLE BARIUM SALTS -- 0.001 %
HEAVY METALS (as Pb) -- 0.001 %
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