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795488

Sigma-Aldrich

磷酸钾 一元

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

同義詞:

prim.-磷酸钾, 磷酸二氢钾

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About This Item

線性公式:
KH2PO4
CAS號碼:
7778-77-0
分子量：:
136.09
EC號碼:
231-913-4
MDL號碼:
MFCD00011401
分類程式碼代碼:
12352302
PubChem物質ID:
329768487
NACRES:
NA.21

等級

ACS reagent
anhydrous

品質等級

200

產品線

Redi-Dri™

化驗

≥99%

形狀

powder or crystals

品質

free-flowing

雜質

≤0.01% Insoluble matter

損耗

≤0.2% loss on drying, 105°C

pH值

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.)

負離子痕跡

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

正離子痕跡

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

SMILES 字串

[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 密鑰

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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相關類別

一般說明

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。

應用

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）。

特點和優勢

  • 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

法律資訊

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

儲存類別代碼

11 - Combustible Solids

水污染物質分類（WGK）

WGK 1

閃點（°F）

Not applicable

閃點（°C）

Not applicable

Choose from one of the most recent versions:

分析證明 (COA)

Lot/Batch Number
0000359756
MKCV3796
MKCV8319
MKCW4893
0000359756

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