Merck
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文件

795488

Sigma-Aldrich

磷酸钾 一元

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

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别名:
prim.-磷酸钾, 磷酸二氢钾
线性分子式:
KH2PO4
CAS号:
7778-77-0
分子量:
136.09
EC 号:
231-913-4
MDL编号:
MFCD00011401
PubChem化学物质编号:
329768487

等级

ACS reagent
anhydrous

质量水平

200

产品线

Redi-Dri™

检测方案

≥99%

形式

powder or crystals

质量

free-flowing

杂质

≤0.01% Insoluble matter

缺失

≤0.2% loss on drying, 105°C

pH值（酸碱度）

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.)

密度

2.338 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.003%

痕量阳离子

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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相关类别

一般描述

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。

应用

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）。

特点和优势

  • 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

法律信息

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

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

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  1. How does Redi-Dri™ help keep salts and buffers free-flowing?

    Redi-Dri™ products are specially handled and the bottle is specially designed to ensure that the product will remain dry without adding impurities or additives to the product. Ensuring that you receive the highest quality material that is easy to handle.

  2. Are there any special storage conditions that must be maintained?

    No, Redi-Dri™ products can be stored under the same conditions as the equivalent non-Redi-Dri™ products.

  3. How long will material remain free-flowing after it is opened?

    While the exact amount of time your material will remain free-flowing can vary, this largely depends on the ambient storage conditions and how many times it is opened.

Wenchong Sun et al.
Experimental neurobiology, 29(5), 356-375 (2020-11-07)
Dexmedetomidine (DEX) has neuroprotective effects and its efficacy was determined in propofol-treated pups. Postnatal day (P) 7 rats were exposed to propofol and DEX to investigate the induced apoptosis-related gene expression. Furthermore, synaptic structural changes at the cellular level were
Venkata Ramana Vaka et al.
American journal of physiology. Regulatory, integrative and comparative physiology, 318(2), R256-R262 (2019-11-14)
Preeclampsia (PE) is characterized by new-onset hypertension that usually occurs in the third trimester of pregnancy and is associated with oxidative stress and angiotensin II type 1 receptor agonistic autoantibodies (AT1-AAs). Inhibition of the AT1-AAs in the reduced uterine perfusion
Venkata Ramana Vaka et al.
American journal of physiology. Regulatory, integrative and comparative physiology, 316(5), R441-R447 (2019-02-28)
Preeclampsia (PE) is characterized by new-onset hypertension during pregnancy and is associated with immune activation and placental oxidative stress. Mitochondrial dysfunction is a major source of oxidative stress and may play a role in the pathology of PE. We (Vaka
Mao Taketani et al.
Nature biotechnology, 38(8), 962-969 (2020-04-02)
Bacteroides thetaiotaomicron is a human-associated bacterium that holds promise for delivery of therapies in the gut microbiome1. Therapeutic bacteria would benefit from the ability to turn on different programs of gene expression in response to conditions inside and outside of
Lina M González et al.
Nature chemical biology, 16(2), 126-133 (2019-12-04)
Materials can be made multifunctional by embedding them with living cells that perform sensing, synthesis, energy production, and physical movement. A challenge is that the conditions needed for living cells are not conducive to materials processing and require continuous water

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 Testing Method (HPLC) for Folic Acid Tablets Using a Monolith Column and UV detection

Folic acid or folate is classified as a B vitamin (B9). Folic acid is synthetically produced, and used in fortified foods and supplements. Folate is converted by humans to dihydrofolate (dihydrofolic acid), tetrahydrofolate (tetrahydrofolic acid), and other derivatives, which have various biological activities.

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