| 质量标准： |
GB/T 1282-1996
项目Item 优级纯 分析纯
(GR) (AR)
含量(H3PO4)Assay,% ≥ 85.0 85.0
色度，黑曾单位Color(APHA),% ≤ 10 25
灼烧残渣Ignition residue,% ≤ 0.1 0.2
挥发酸Volatile acid，% ≤ 0.02 0.02
氯化物(Cl)Chloride,% ≤ 0.0002 0.0003
硫酸盐(SO4)Sulfate,% ≤ 0.001 0.003
硝酸盐(NO3)Nitrate,% ≤ 0.0003 0.0005
砷(As)Arsenic,% ≤ 0.001 0.0001
铁(Fe)Iron,% ≤ 0.001 0.002
钠(Na)Sodium,% ≤ 0.05 --
钾(K)Potassium,% ≤ 0.005 --
锰(Mn)Manganese,% ≤ 0.0002 0.0002
镍(Ni)Nickel,% ≤ 0.0005 --
铜(Cu)Copper,% ≤ 0.0005 --
锌(Zn)Zinc,% ≤ 0.001 --
镉(Cd)Cadmium,% ≤ 0.0005 --
铅(Pb)Lead,% ≤ 0.0005 --
重金属(以Pb计)Heavy metals,% ≤ -- 0.001
还原物质(以H3PO4
计)Reducing substances,% ≤ 0.005 0.01
项目 电子级磷酸
含量（P2O5） % 63.0-68.0
熔点 ℃ 35.0-42.3
外观 不规则粉末
硝酸盐(NO3) ppm ≤5
硫酸盐(SO4) ppm ≤5
氯化物(Cl) ppm ≤5
铝（Al) ppb ≤20
锑 (Sb) ppb ≤300
砷 (As) ppb ≤10
钡 (Ba) ppb ≤20
镉 (Cd) ppb ≤10
钙 (Ca) ppb ≤50
铬 (Cr) ppb ≤10
钴(Co) ppb ≤20
铜 (Cu) ppb ≤20
金 (Au) ppb ≤5
铁(Fe) ppb ≤50
铅 (Pb) ppb ≤10
锂 (Li) ppb ≤10
镁 (Mg) ppb ≤20
锰 (Mn) ppb ≤10
镍(Ni) ppb ≤10
钾 (K) ppb ≤20
银 (Ag) ppb ≤10
钠 (Na) ppb ≤50
锶 (Sr) ppb ≤10
锌 (Zn) ppb ≤10
ACS级
项目名称Item ACS Grade
含量(H3PO4)Assay ≥85.0%
色度，黑曾单位Color(APHA) ≤10
水不溶物Insoluble matter ≤0.001%
氯化物(Cl)Chloride(Cl) ≤3ppm
硝酸盐(NO3)Nitrate ≤5ppm
硫酸盐(SO4)Sulfate ≤0.003%
挥发酸(以乙酸计)Volatile acids(as CH3COOH) ≤0.001%
锑(Sb)Antimony(Sb) ≤0.002%
钙(Ca)Calcium(Ca) ≤0.002%
镁(Mg)Magnesium(Mg) ≤0.002%
钾(K)Potassium(K) ≤0.005%
钠(Na)Sodium(Na) ≤0.025%
砷(As)Arsenic(As) ≤1ppm
重金属(以Pb计)Heavy metals(as Pb) ≤0.001%
铁(Fe)Iron(Fe) ≤0.003%
锰(Mn)Manganese(Mn) ≤0.5ppm
还原性物质Reducing substances Passes test
品级Grade 色谱纯
(grade for HPLC)
外观description crystals
含量assay 85-90% (T)
熔点mp ~40 °C
λ neat
紫外吸光度UV absorption
λ: 210 nm ≤0.07
λ: 220 nm ≤0.05
λ: 230 nm ≤0.04
λ: 250 nm ≤0.04
λ: 500 nm ≤0.02
RP gradient test complies
品级Grade 药用级
(Ph. Eur., BP, NF, FCC)
assay 85.0-88.0%
alkali phosphates, in accordance
residual solvents, in accordance
substance precip. by Ammonia, in accordance
heavy metals (as Pb) ≤0.0005%
volatile acids (as CH3COOH) ≤0.001%
anion traces
chloride (Cl-): ≤5 ppm
fluoride (F-): ≤5 ppm
nitrate (NO3-): ≤5 ppm
nitrate (NO3-): in accordance
phosphite, hypophosphite (as H3PO3): ≤30 ppm
sulfate (SO42-): ≤50 ppm
sulfate (SO42-): in accordance
cation traces
As: ≤2 ppm
Cd: ≤3 ppm
Cu: ≤10 ppm
Fe: ≤10 ppm
Hg: ≤1 ppm
Pb: ≤3 ppm
Zn: ≤10 ppm
suitability passes test for appearance of solution
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