60360
フタル酸カリウム, 一塩基酸
puriss. p.a., ≥99.5% (T)
別名:
KHP, フタル酸 一カリウム塩, フタル酸水素カリウム, 重フタル酸カリウム
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この商品について
化学式:
HOOCC6H4COOK
CAS番号:
分子量:
204.22
UNSPSC Code:
12352302
NACRES:
NA.21
PubChem Substance ID:
EC Number:
212-889-4
Beilstein/REAXYS Number:
3637128
MDL number:
Assay:
≥99.5% (T)
Form:
solid
Solubility:
water: soluble (93 g/l at 30 °C (86 °F))
grade
puriss. p.a.
Quality Segment
assay
≥99.5% (T)
form
solid
pH
4
mp
295-300 °C (dec.) (lit.)
solubility
water: soluble (93 g/l at 30 °C (86 °F))
anion traces
chloride (Cl-): ≤20 mg/kg, sulfate (SO42-): ≤50 mg/kg
cation traces
Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤100 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
functional group
carboxylic acid
SMILES string
[K+].OC(=O)c1ccccc1C([O-])=O
InChI
1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H,(H,9,10)(H,11,12);/q;+1/p-1
InChI key
IWZKICVEHNUQTL-UHFFFAOYSA-M
General description
Potassium phthalate monobasic (KHP) is the monopotassium salt of pthalic acid. It has been proposed as a certified reference material (CRM) under ISO/IEC 17025 and ISO Guide 34 accreditation. Its spectral shift, multiplicity, solubility and relaxation times in different solvents have been reported.
Application
Potassium phthalate monobasic may be used as a primary standard in acidimetric titration and also to prepare potassium phthalate buffer solution for pH calibration.
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保管分類
11 - Combustible Solids
flash_point_f
387.1 °F - Pensky-Martens closed cup
flash_point_c
197.3 °C - Pensky-Martens closed cup
ppe
Eyeshields, Gloves, type N95 (US)