Potassium dihydrogen phosphate 磷酸二氢钾

CAS 7778-77-0 MFCD00011401

化学结构图

7778-77-0
SMILES: O=P([O-])(O)O.[K+]

化学属性

Mol. FormulaH2KO4P
Mol. Weight136.08
Density2.338
Melting Point252.6 °C
SolubilitySlightly soluble in water. Insoluble in alcohol
TSCAYes
Appearance 无色至白色结晶或结晶性粉末,无臭。相对密度2.338。易溶于水,不溶于乙醇。水溶液呈酸性,2.7%的水溶液PH为4.2-4.7。于空气中稳定。ADI0-70mg/kg(FAO/WHO,1994)。 powder
Stability对湿度敏感
pH:A
Boiling Point>450 °C at 760 mmHg

别名和识别编码

Chemical NamePotassium dihydrogen phosphate
Synonym Potassium dihydrogen phosphate, AR,99.5% {LY} Potassium dihydrogen phosphate, AR,99.5% {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {} {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {} {} {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {} {} {} {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Potassium dihydrogen phosphate, AR,99.5% {} {} {} {} {} {} {}
MDL NumberMFCD00011401
PubChem Substance ID516951
CAS Number7778-77-0
EC Number231-913-4
Merck Number14,7659
Chemical Name Translation磷酸二氢钾
InChIKeyGNSKLFRGEWLPPA-UHFFFAOYSA-M
LabNetwork Molecule IDLN00194992
InChIInChI=1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
Canonical SMILESO=P(O[O])=O.[KH2]
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品牌质保精细包装    现货库存    一流品牌服务   

分类

  • {SNA} Analytical Reagents, Analytical/Chromatography, Buffers & Reagents, Chromatography Reagents & Solvents, HPLC, HPLC Buffer - Solid, HPLC Buffers, Solid
  • {SNA} Chemical Synthesis, Development Quantities for Research, Essential Chemicals, High-Purity Salts, Inorganic Salts,
  • {SNA} Biological Buffers,

产品应用

  • 配制缓冲液,测定砷、锑、磷、铝和铁,配制磷标准液,配制单倍体育种用各种培养基,测定血清中无机磷、碱性酸酶活力,制备细菌血清检验钩端螺旋体的培养基等。

相关文献及参考

  • Merck: 14,7659

安全信息

Personal Protective Equipment Eyeshields, Gloves, half-mask respirator (US), multi-purpose combination respirator cartridge (US) Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
RTECSTC6615500
WGK Germany1
Safety Statements
  • S24/25 Avoid contact with skin and eyes 避免皮肤和眼睛接触;
Risk Statements
  • R36/38 Irritating to eyes and skin 对眼睛和皮肤有刺激性
Storage condition Store at room temperature, keep dry and cool {LY} Store at room temperature, keep dry and cool {} {LY} Store at room temperature, keep dry and cool {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} { {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry an
GHS Symbol
Precautionary statements
  • P262 Do not get in eyes, on skin, or on clothing. 不要接触眼睛,皮肤或衣服。
UN Number 3260
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 4640 mg/kg
TOXIC EFFECTS :
   Behavioral - somnolence (general depressed activity)
   Gastrointestinal - other changes
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0571153

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : >4640 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0571153

其他信息

  • 方法一:(1)中和法。由磷酸与氢氧化钾按计量中和而得到: 将苛性钾配成相对密度为1.3(约30%)的溶液,在不断搅拌下,与50%的磷酸中和。反应温度维持在85-100℃,终点PH控制在4.2-4.6*刚果红试纸呈浅紫色)。中和液浓缩至相对密度1.32-1.33后过滤,再冷却至36℃以下结晶。离心分离、干燥得产品。母液回收。 也可用磷酸钾中和,工艺与上类似。 (2)磷酸复分解法。用饱和的氯化钾溶液与过量75%磷酸于120-130℃下进行复分解反应。产生的氯化氢气体和水吸收副产品酸。然后用氢氧化钾中和过量的磷酸,控制终点PH在4.2-4.6最后冷却结晶、离心分离、干燥得产品。母液回用。 也可以热法磷酸(85)与农用氯化钾为原料,经过分解、中和、
  • Sigma Aldrich:7778-77-0(sigmaaldrich)
  • 用途十:配制缓冲液,测定砷、锑、磷、铝和铁,配制磷标准液,配制单倍体育种用各种培养基,测定血清中无机磷、碱性酸酶活力,制备细菌血清检验钩端螺旋体的培养基等。校准仪器和装置;评价方法;工作标准;质量保证/质量控制;其他。
  • 方法二:苛性钾法将除铁的苛性钾溶液(约30%KOH)加入带有搅拌和蒸汽夹
  • 上游原料:氢氧化钠 --> 盐酸 --> 碳酸钾 --> 氢氧化钾 --> 氢 --> 磷酸 --> 碳酸钙 --> 碳酸氢铵 --> 氯化钾 --> 氢氧化钾溶液 --> 刚果红试纸 --> 氨苄青霉素 --> 聚丙烯酰胺 --> 氟化钙 --> 磷酸二氢钠 --> 磷酸钾 --> D-(S)-3-乙酰巯基-2-甲基丙酰基-L-脯氨酸 --> 磷酸二氢钠 --> 氟硅酸钾
  • 使用限量:GB 2760--2002(g/kg):小麦粉5.0;饮料2.0。作为钾源(mg/100g):婴儿配方粉≤1000;较大婴儿配方食品400~1500;婴幼儿补充谷粉200~1000(均以钾计)。 FAO/WHO(1984,g/kg):午餐肉、熟猪前腿肉、熟火腿、熟肉末3(以无水物计);低倍浓缩乳、甜炼乳、稀奶油,单用2,与其他稳定剂合用3(以无水物计);奶粉、奶油粉5(以无水物计);加工干酪9(以磷计);速冻黑线鳕、鲈鱼由、鲽科鱼、无须鳕的鱼肉片5(以P2O5计);即食肉汤、羹1000mg/kg(以P2O5计);冷饮2(以P2O5计)。
  • 所属类别二:无机化工产品: 无机盐: Cm磷化合物及磷酸盐
  • 海关编码:28352400
  • 用途九:配制缓冲液,测定砷、锑、磷、铝和铁,配制磷标准液,配制单倍体育种用各种培养基,测定血清中无
  • 常规方法:用内衬聚乙烯塑料袋包装,外套塑料编织袋或麻袋,每袋净重50kg。农用品用小塑料袋包装,每小袋净重2kg;10小袋装入纸箱,净重20kg。 应贮存在通风、干燥、阴凉的库房内。包装要密封、防潮。运输中要防雨淋和日光曝晒。不可与有毒物品共贮混运。装卸时小心轻放,防止包装破损。 失火时,可用水、砂土、各种灭火器扑救。
  • 方法五:工业生产方法有中和法、复分解法、萃取法、电渗析法、离子交换法等。 复分解法 将30%氢氧化钠溶液加人盛有蒸馏水的反应器中,在搅拌下缓慢加入85%磷酸进行中和反应,使溶液中和至Ph4.1~4.3,制得磷酸二氢钠,然后加入90%氯化钾于100℃左右进行复分解反应,并保温半小时使其达到平衡,加入除砷剂和除重金属剂进行溶液
  • 含量分析:精确称取预经105℃干燥4h的试样约5g,放入一250ml烧杯内,加水100ml和lmol/L盐酸5.0ml,搅拌至完全溶解。以下按“磷酸氢二钾(05219)”中的方法操作。每ml B—A体积的lmol/L氢氧化钠相当于磷酸二氢钾136.1mg。
  • 毒性:Adl 0~70mg/kg(磷酸盐总量,以磷计;FAO/W
  • 用途五:食品工业中用于制造烘焙物,作膨松剂,调味剂,发酵助剂,营养强化剂,酵母食料。也用作缓冲剂,螯合剂。
  • MOL 文件:7778-77-0.mol
  • {Chemica
  • 用途六:作品质改良剂,
  • 用途一:用作肥料、调味剂、酿
  • 用途二:用作色谱分析试剂及缓冲剂,也用于医药的合成

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