化易AI
2023-02-21回答
Cas 号:
【7664-38-2】
M D L:
MFCD00011340分子式:
H3O4P;H3PO4
分子量:
98.00别 名:
正磷酸,一缩原磷酸,缩原磷酸,乙烯利水剂Phosphoric acid solutionPhosphoric acidOrthophosphoric acidOrthophosphoric acid
分子结构式:
173x139 性 状:
磷酸/电子级磷酸无色、无臭、粘稠液体,溶于水及醇。纯品磷酸为无色斜方晶体,富潮解性。溶于水和乙醇。其酸性较硫酸、盐酸和硝酸等强酸为弱,但较醋酸、硼酸等弱酸为强。能刺激皮肤引起发炎及破坏肌体组织。磷酸溶于水并放热,经高温加热便失水成焦磷酸和偏磷酸,长时间受冷即生成结晶,有腐蚀性,易吸湿。熔点:42.℃沸点:213℃密度:1.834(18℃)质量标准:
磷酸/电子级磷酸 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 ≤10ACS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 °Cλ 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 ≤0.02RP gradient test complies品级Grade 药用级 (Ph. Eur., BP, NF, FCC)assay 85.0-88.0%alkali phosphates, in accordanceresidual solvents, in accordancesubstance precip. by Ammonia, in accordanceheavy 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 accordancecation traces As: ≤2 ppm Cd: ≤3 ppm Cu: ≤10 ppm Fe: ≤10 ppm Hg: ≤1 ppm Pb: ≤3 ppm Zn: ≤10 ppmsuitability passes test for appearance of solution 贮 存:
密封保存。