性 狀：    白色重質(zhì)細(xì)微粉末。重結(jié)晶出來(lái)就是有顏色的粒狀。無(wú)味，無(wú)毒。1600℃以上分解。溶于熱濃硫酸，不溶于水、有機(jī)物及無(wú)機(jī)酸，苛性堿溶液中，溶于熱亞硫酸及熱濃硫酸中?；瘜W(xué)性質(zhì)穩(wěn)定，與碳共熱還原為硫化鋇。 在空氣中遇硫化氫或有毒氣體也不變色。
密度:4.25-4.5
沸點(diǎn):1149℃
超細(xì)硫酸鋇 在面漆中有極高光澤度，低樹(shù)脂要求，穩(wěn)定的分散性，能阻止油漆結(jié)塊，提升油漆品質(zhì)，增加流動(dòng)性。顆粒細(xì)?。ㄆ漕w粒細(xì)度幾乎和二氧化鈦一樣細(xì)?。?，且會(huì)在白色或有色顏料的顆粒之間有著隔離作用，使顏料的顆粒相互保持一定的距離，提高了顏料的效率。

質(zhì)量標(biāo)準(zhǔn)：     
GB/T1269-77
項(xiàng)目ltem                                      分析純     化學(xué)純
(AR)       (CP)
鹽酸可溶物Soluble in hydrochloric acid      ≤ 0.15       0.25
灼燒失重Loss on ignition,%                  ≤ 1.5        1.5
氯化物(Cl)Chloride,%                        ≤ 0.005      0.02
可溶性硫酸鹽(以SO4計(jì))Soluble sulfate,%      ≤ 0.005      0.03
氮化合物(N)Nitrogen compounds,%             ≤ 0.005      0.01
鐵(Fe)Iron,%                                ≤ 0.0005     0.001
砷(As)Arsenic,%                             ≤ 0.0001     0.001
可溶性的鋇鹽(以Ba計(jì))Soluble barium salt,%   ≤ 0.0001     0.0005
重金屬(以Pb計(jì))Heavy metals,%                ≤ 0.0005     0.001

超細(xì)硫酸鋇:

BaSO4純度Purity                              ≥99.0%
揮發(fā)物Volatile matter                       0.2% (105℃)
PH值                                         7-9
亮度brightness                               99
平均粒徑particle size                        1μm
密度Density g/ml                             4.4
折射指數(shù)Refractive index                     1.64
篩余screen floating                         〈0.004%

品級(jí)Grade                               沉淀硫酸鋇  
(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

品級(jí)Grade                           美國(guó)藥典USP級(jí)  
(USP)
鑒別試驗(yàn)IDENTITY                          PASS
PH TEST                                   3.5 - 10.0
硫化物L(fēng)IMIT OF SULFIDE                    ≤ 0.5 PPM
酸溶性物質(zhì)LIMIT OF ACID-SOLUBLE SUBSTANCE ≤ 0.3%
可溶性鋇鹽LIMIT OF SOLUBLE BARIUM SALTS   ≤ 0.001%
重金屬HEAVY METALS                        ≤ 0.001%
殘留溶劑RESIDUAL SOLVENTS                 MEETS THE REQUIREMENTS
含量ASSAY                                 97.5% ～ 100.5%

USP級(jí)
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