CAS 7778-77-0 MFCD00011401-Potassium dihydrogen phosphate 磷酸二氢钾 TAO{mole}

Potassium dihydrogen phosphate 磷酸二氢钾

CAS 7778-77-0 MFCD00011401

化学结构图

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

化学属性

Mol. Formula	H2KO4P
Mol. Weight	136.08
Density	2.338
Melting Point	252.6 °C
Solubility	Slightly soluble in water. Insoluble in alcohol
TSCA	Yes
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 Name	Potassium 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 p
MDL Number	MFCD00011401
PubChem Substance ID	516951
CAS Number	7778-77-0
EC Number	231-913-4
Merck Number	14,7659
Chemical Name Translation	磷酸二氢钾
InChIKey	GNSKLFRGEWLPPA-UHFFFAOYSA-M
LabNetwork Molecule ID	LN00194992
InChI	InChI=1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
Canonical SMILES	O=P(O[O])=O.[KH2]

信息真实价格透明资金保障专业采购外包团队在线服务

品牌质保精细包装现货库存一流品牌服务

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。

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,

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
磷
用途二:用作色谱分析试剂及缓冲剂，也用于医药的合成