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795488

磷酸二氢钾一元

Name: 磷酸二氢钾 一元
Brand: SIAL

anhydrous, free-flowing, Redi-Dri^™, ACS reagent, ≥99%

别名:

prim.-磷酸钾, 磷酸二氢钾

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关于此项目

线性分子式:

KH₂PO₄

化学文摘社编号:

7778-77-0

分子量:

136.09

NACRES:

NA.21

PubChem Substance ID:

329768487

UNSPSC Code:

12352302

EC Number:

231-913-4

MDL number:

MFCD00011401

Assay:

≥99%

Grade:

ACS reagent, anhydrous

Form:

powder or crystals

Solubility:

water: soluble (208 g/l at 20 °C (68 °F))

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Quality Level

200

grade

ACS reagent, anhydrous

product line

Redi-Dri^™

assay

≥99%

form

powder or crystals

quality

free-flowing

impurities

≤0.01% Insoluble matter

loss

≤0.2% loss on drying, 105°C

pH

4.1-4.5 (25 °C, 5%)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

mp

252.6 °C (lit.)

solubility

water: soluble (208 g/l at 20 °C (68 °F))

density

2.338 g/mL at 25 °C (lit.)

anion traces

chloride (Cl^-): ≤0.001%, sulfate (SO₄^2-): ≤0.003%

cation traces

Fe: ≤0.002%, Na: ≤0.005%, heavy metals: ≤0.001% (by ICP)

SMILES string

[K+].OP(O)([O-])=O

InChI

1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1

InChI key

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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General description

磷酸二氢钾（正磷酸一钾）是水溶无机盐。它形成的标准焓是 −376.1 kcalmol^-1。可作为起始材料合成偏磷酸钾。

Redi-Dri^™包装技术可避免盐类试剂结块，让你无需再通过复杂手段保持粉末自由流动。粉末维持干燥便于准确称量和轻松取用，改善实验结果。Redi-Dri^™技术无抗结剂添加即可数月保持粉末的易用流动形式，让你不再需要对盐类试剂进行烘箱或干燥器干燥处理，或手动粉碎结块。重复取用后，结果依然准确。Redi-Dri^™包装通过长期保证盐类试剂的方便易用，大幅节约您的时间、精力和金钱。

Application

磷酸二氢钾用于制备磷酸缓冲液和磷酸盐缓冲液（PBS）。它还可以用来制备 PEG1000（聚乙二醇）/磷酸钾水二相体系（ATPS）。

Features and Benefits

提高效率——免除需要松散硬化粉末的时间和精力
更加安全——避免使用工具大力敲碎团块的风险
更加经济——制备和溶剂化速度更快，提高效率并节约成本
质量保证——经过专业检测的出色品质，无抗结剂添加
灵活的用量选择——有从研究到放大级别的用量规格可供选择

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

存储类别

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

0000537213

MKCZ6855

0000490087

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商品

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

实验方案

USP Dissolution Method for Folic Acid

Folic acid vs. folate differences and biological activities; implications in fortified foods and supplements for human health.

全球贸易项目编号

货号	GTIN
795488-500G	04061832958224
795488-2.5KG	04061832958200
795488-1KG	04061832958125

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