Potassium hydrogen phthalate supplier

Name
Potassium hydrogen phthalate
EINECS 212-889-4
CAS No. 877-24-7
Article Data4
CAS DataBase
Density 1.006g/mLat 20°C
Solubility 80 g/L (20 °C) in water
Melting Point 295-300 °C
Formula C₈H₆O₄.K
Boiling Point 378.3 °C at 760 mmHg
Molecular Weight 204.224
Flash Point 196.7 °C
Transport Information UN 1789 8/PG 3
Appearance White crystalline powder
Safety 26-36-24/25-22-45-36/37/39
Risk Codes 36/38-36/37/38-34
Molecular Structure
Hazard Symbols Xi,C
Synonyms 1,2-Benzenedicarboxylicacid, monopotassium salt (9Cl);Phthalic acid, monopotassium salt (8Cl);Hydrogen potassium phthalate;AI3-51765;Monopotassium 1,2-benzenedicarboxylate;Monopotassium phthalate;Potassium acid phthalate;Potassium biphthalate;
PSA 77.43000
LogP -0.25170

Synthetic route

: C8H4(2)HO4(1-)*K(1+)

: 877-24-7
potassium hydrogen phthalate

Conditions

Conditions	Yield
With water-d2 In water at 34.9℃; Equilibrium constant;

: 88-99-3
benzene-1,2-dicarboxylic acid

: potassium hydroxide

: 877-24-7
potassium hydrogen phthalate

Conditions

Conditions	Yield
In water mixed at 1:1 ratio, evapd.; recrystn.;

: 88-99-3
benzene-1,2-dicarboxylic acid

: 877-24-7
potassium hydrogen phthalate

Conditions

Conditions	Yield
With potassium hydroxide In water
With potassium hydroxide In water at 20℃; for 0.5h;

: 4702-13-0
N-phthaloylglycine

: 877-24-7
potassium hydrogen phthalate

Conditions

Conditions	Yield
With potassium hydroxide In ethanol at 20℃; for 4h;

: 85-44-9
phthalic anhydride

: 877-24-7
potassium hydrogen phthalate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 180 °C 2: potassium hydroxide / ethanol / 4 h / 20 °C View Scheme

: 33100-27-5
15-crown-5

: 877-24-7
potassium hydrogen phthalate

: C8H5O4(1-)*C12H24KO6

Conditions

Conditions	Yield
In water at 20℃; for 12h;	100%

: hexammine cobalt(III) chloride

: 7732-18-5
water

: 877-24-7
potassium hydrogen phthalate

: hexaamminecobalt(III) chloride hydrogen phthalate trihydrate

Conditions

Conditions	Yield
In water byproducts: KCl; dissolving of (Co(NH3)6)Cl3 (1 equiv.) in hot water, addn. of potassium hydrogen phthalate (3 equiv.); slow cooling; crystn. for a few hours; filtration, crystn. from supernatant soln., combining of cryst.; drying in air; elem. anal.;	99%

...Expand

: 877-24-7
potassium hydrogen phthalate

: 88-99-3
benzene-1,2-dicarboxylic acid

: 85-44-9
phthalic anhydride

Conditions

Conditions	Yield
Stage #1: benzene-1,2-dicarboxylic acid With trichloroisocyanuric acid; triphenylphosphine In dichloromethane at 0 - 20℃; Stage #2: potassium hydrogen phthalate In dichloromethane at 20℃; for 1h;	95%

: 877-24-7
potassium hydrogen phthalate

: Methanesulfonic acid 2-[2-(2-prop-2-ynyloxy-ethoxy)-ethoxy]-ethyl ester

: 1408059-52-8
2-(2-(2-(2-(prop-2-yn-1-yloxy)ethoxy)ethoxy)ethyl)isoindoline-1,3-dione

Conditions

Conditions	Yield
With sodium iodide In N,N-dimethyl-formamide at 80℃;	94%
With sodium iodide In N,N-dimethyl-formamide at 80℃;	5.7 g

: 877-24-7
potassium hydrogen phthalate

: 6018-89-9
nickel(II) acetate tetrahydrate

: 822-36-6
4-Methylimidazole

: [Ni(4-methylimidazole)2(phthalate)(H2O)]

Conditions

Conditions	Yield
In ethanol; water aq. soln. of Ni salt was added to warm soln. of K salt and 4-methylimidazole in EtOH; stirred under reflux for 1 h; filtered; washed (H2O, EtOH); dried in air; elem. anal.;	90%

...Expand

: 877-24-7
potassium hydrogen phthalate

: pentakis(thiourea)dicopper(I) sulfate trihydrate

: 17356-08-0
thiourea

: tris(thiourea)copper(I) monohydrogenphthalate

Conditions

Conditions	Yield
In water hot aq. soln. potassium monohydrogenphthalate was added rapidly to hot soln. Cu complex and thiourea in water; ppt. was collected and washed with water; elem. anal.;	84%

...Expand

: 14267-92-6
1-chloro-4-pentyne

: 877-24-7
potassium hydrogen phthalate

: 6097-07-0
N-(pent-4-ynyl)phthalimide

Conditions

Conditions	Yield
With sodium iodide In N,N-dimethyl-formamide at 100℃; for 12h;	78%

: 366-18-7
[2,2]bipyridinyl

: 877-24-7
potassium hydrogen phthalate

: 6147-53-1
cobalt(II) diacetate tetrahydrate

: 872975-43-4
[(2,2'-bipyridine)(o-phthalate)aquacobalt(II)]

Conditions

Conditions	Yield
In methanol a soln. of K salt added to a soln. of Co salt and bipy, heated for 1 h; crysts. filtered, washed (methanol), dried (air); elem. anal.;	75.6%

...Expand

: 877-24-7
potassium hydrogen phthalate

: silver nitrate

: 172043-90-2
Ag2(C6H4(CO2)2)(NH3)2

Conditions

Conditions	Yield
With NH3 In ammonia aq. ammonia=NH3; molar ratio Ag:phthalate=2:1, in 10% NH3; crystn. on evapn. (room temp., in dark, several weeks); elem. anal.;	75%

: 877-24-7
potassium hydrogen phthalate

: 77544-60-6
p-toluenesulfonic acid 2-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]ethyl ester

: C16H23NO7

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 120℃; Inert atmosphere;	73%

: 877-24-7
potassium hydrogen phthalate

: 57044-24-3
(R)-4-chloromethyl-2,2-dimethyl-1,3-dioxolane

: (R)-isopropylidene glycerol hemiphthalate

Conditions

Conditions	Yield
With pyridine In dimethylsulfoxide-d6 for 24h; Solvent; Reflux;	72%

: 822-36-6
4-methyl-1H-imidazole

: 877-24-7
potassium hydrogen phthalate

: 6147-53-1
cobalt(II) diacetate tetrahydrate

: [Co(o-phthalate)(4-methylimidazole)2(H2O)]n

Conditions

Conditions	Yield
In water a soln. of Co-contg. compd. (5 mmol) in water was added to a hot soln. of KHPht (5 mmol) and 4-MeIm (10 mmol) in water; the mixt. was stirred and heated for 30 min and left to stand overnight at room temp.; the crystals were filtered off, washed with water and ethanol and dried in air; elem. anal.;	70%

...Expand

: 877-24-7
potassium hydrogen phthalate

: (S)-4-(chloromethyl)-2,2-dimethyl-1,3-dioxolane

: (S)-isopropylidene glycerol 2-carboxybenzoate

Conditions

Conditions	Yield
With pyridine In dimethylsulfoxide-d6 for 24h; Solvent; Reflux;	69%

: 553-26-4
4,4'-bipyridine

: 877-24-7
potassium hydrogen phthalate

: 5970-45-6
zinc(II) acetate dihydrate

: Zn(2+)*C6H4(COO)2(2-)*C10H8N2*4H2O=Zn[C6H4(COO)2(C10H8N2)(H2O)2]*2H2O

Conditions

Conditions	Yield
In water soln. of 4,4'-bipyridine (10 mmol) and potassium hydrogen phthalate (10 mmol) in H2O (25 ml) added to soln. of Zn acetate (10 mmol) in H2O (10 ml), refluxed for 1 h, cooled; ppt. filtered off, washed (H2O), air-dried; elem. anal.;	68.18%

...Expand

: 108-89-4
picoline

: 877-24-7
potassium hydrogen phthalate

: copper dichloride

: 251968-40-8
copper ortho-phthalic acid γ-picoline complex

Conditions

Conditions	Yield
In water CuCl2 and picoline addn. to hot soln. of phthalate, heating and stirring(30 min), cooling; ppt. filtration off, washing (water, ethanol, ether); elem. anal.;	53%

...Expand

: 693-98-1
2-methylimidazole

: nickel(II) nitrate hexahydrate

: 877-24-7
potassium hydrogen phthalate

: 1219807-45-0
[Ni(2-methylimidazole)2(phthalate)(H2O)3]*H2O

Conditions

Conditions	Yield
In water aq. soln. of Ni salt was added to warm aq. soln. of K salt and 2-methylimidazole; stirred under reflux for 1 h; filtered; washed (H2O, EtOH); dried in air; elem. anal.;	48%

...Expand

: 1915-42-0
4,4'-dipyridylamine

: copper(II) choride dihydrate

: 877-24-7
potassium hydrogen phthalate

: ([Cu2(phthalate(2-))2(4,4'-dipyridylamine))]*H2O)n

Conditions

Conditions	Yield
In water High Pressure; mixt. salt CuCl2*2H2O and K-phthalic acid, ligand was suspended in waterand heated at 120°C for 24 h; ppt. was filtered off, washed with H2O, EtOH, acetone, dried in air; elem. anal.;	45%

...Expand

: nickel(II) nitrate hexahydrate

: 877-24-7
potassium hydrogen phthalate

: [Ni(H2O)6(μ-H2O)2K2(hydrogenphthalate)4(H2O)]

Conditions

Conditions	Yield
With aq. KOH In ethanol; water EtOH/H2O soln. of potassium hydrogen phthalate added to aq. Ni(NO3)2; pHset to 8 by aq. KOH; heated to 425 K for 96 h; crystd. by cooling to room temp.;	42.23%

: (NnBu4)[Mn4O2(O2CPh)9(H2O)]

: 877-24-7
potassium hydrogen phthalate

: K4[Mn18O16(O2CPh)22(phthalate)2(H2O)4]

Conditions

Conditions	Yield
In acetonitrile equimolar amts., stirring for 5 d; filtration, crystn. on slow evapn. (room temp., 10 d), collection (filtration), washing (hexanes), drying (vac.); further crop on concn. of filtrate; elem. anal.;	40%

: cadmium(II) nitrate tetrhydrate

: 877-24-7
potassium hydrogen phthalate

: 25932-09-6
[Cd(phthalate)(H2O)]

Conditions

Conditions	Yield
With KOH; oxalic acid In water High Pressure; neutralization of aq. mixt. of KH(phthalate), Cd(NO3)2*4H2O and oxalic acid with aq. soln. of KOH under continuous stirring, seling in stainlesssteel vessel, heating to 160°C for 120 h; slowly cooling to ambient temp., crystn., sepn., washing with water; elem. anal.;	40%

: 366-18-7
[2,2]bipyridinyl

: cobalt basic carbonate hydrate

: 7732-18-5
water

: 877-24-7
potassium hydrogen phthalate

: 584-08-7
potassium carbonate

: [bis(2,2'-bipyridine)carbonatocobalt(III)] o-phthalate hydrate (1/8)

Conditions

Conditions	Yield
With air In water a warm soln. of acid and bipy added to a suspn. of metal salts, stirred at 60°C for 30 min; hot filtered, alowed to cool to room temp., after 2 wk. crysts. filtered, washed (water, ethanol), dried (air); elem. anal.;	30.4%

...Expand

: 108-99-6
3-Methylpyridine

: 877-24-7
potassium hydrogen phthalate

: 6018-89-9
nickel(II) acetate tetrahydrate

: [Ni(o-phthalato)(3-methylpyridine)2(H2O)3]*H2O

B: [Ni(o-phthalato)(3-methylpyridine)(H2O)]

Conditions

Conditions	Yield
In water a soln. of Ni salt added to a hot soln. of ligands, refluxed for 1.5 h; filtered, the filtrate left to stand at room temp. in an open flask, filtered, washed (H2O, EtOH), dried (air); elem. anal.;	A 27.86% B n/a

...Expand

: 288-32-4
1H-imidazole

: 719261-06-0
nickel(II) carbonate

: 877-24-7
potassium hydrogen phthalate

: 1219807-44-9
[Ni(imidazole)3(phthalate)(H2O)2]*H2O

B: 1219807-43-8
[Ni(imidazole)6](phthalate)*H2O

Conditions

Conditions	Yield
In methanol; water Ni salt (1 equiv.) and K salt (1 equiv.) were added to soln. of imidazole (2 equiv.) in H2O/MeOH (1/1); refluxed for 2 h; filtered; slowly evapd. for several d; filtered; washed (MeOH, ether); dried in air; septd. by hand; elem. anal.;	A 20% B 11%

...Expand

: cobalt(II) nitrate hexahydrate

: 877-24-7
potassium hydrogen phthalate

: dihydroxydiphthalatotricobalt(II)

Conditions

Conditions	Yield
In water High Pressure; soln. of Co(NO3)2*6H2O (0.6 mmol) and KOOCC6COOH (1.8 mmol) heated to 473K for 60 h; cooled to room temp.; elem. anal.; detd. by XRD;	10%

: 877-24-7
potassium hydrogen phthalate

: 753-73-1
dimethyltin dichloride

: dimethyl tin (2+); dimethyl tin (2+)

: 64-17-5
ethanol

: 877-24-7
potassium hydrogen phthalate

: 541-41-3
chloroformic acid ethyl ester

: 2306-33-4
monoethyl phthalate

Conditions

Conditions	Yield
Zersetzen des Produktes mit Wasser;

...Expand

: 877-24-7
potassium hydrogen phthalate

: C8H4(2)HO4(1-)*K(1+)

Conditions

Conditions	Yield
With water-d2 In water at 34.9℃; Equilibrium constant;

: 67-52-7
BARBITURIC ACID

: 5153-67-3
nitrostyrene

: 877-24-7
potassium hydrogen phthalate

: 88-99-3
benzene-1,2-dicarboxylic acid

aqueous dioxane: aqueous dioxane

: 5909-47-7
5-(2-nitro-1-phenyl-ethyl)-pyrimidine-2,4,6-trione

Conditions

Conditions	Yield
at 0℃; Kinetics;
at 70℃; Kinetics;

...Expand

Potassium hydrogen phthalate Specification

The Hydrogen potassium phthalate with CAS registry number of 877-24-7 is also known as 1,2-Benzenedicarboxylic acid, potassium salt (1:1). The IUPAC name is Potassium 2-carboxybenzoate. It belongs to product categories of Inorganic & Organic chemicals; Classes of Metal Compounds; K (Potassium) Compounds (excluding simple potassium salts); Typical Metal Compounds. Its EINECS registry number is 212-889-4. In addition, the formula is C₈H₆O₄.K and the molecular weight is 204.22. This chemical is a white crystalline powder and shouold be sealed in cool ang dry place. What's more, it is used as analytical reagent and a buffering agent or sodium hydroxide.

Physical properties about Hydrogen potassium phthalate are: (1)ACD/LogP: 0.81; (2)ACD/LogD (pH 5.5): -1.98; (3)ACD/LogD (pH 7.4): -3.3; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 1; (7)ACD/KOC (pH 7.4): 1; (8)#H bond acceptors: 4; (9)#H bond donors: 2; (10)#Freely Rotating Bonds: 2; (11)Flash Point: 196.7 °C; (12)Enthalpy of Vaporization: 66.05 kJ/mol; (13)Boiling Point: 378.3 °C at 760 mmHg; (14)Vapour Pressure: 2.14E-06 mmHg at 25 °C.

Preparation of Hydrogen potassium phthalat. Firstly, potassium is dissolved in water and heated under stirring. Meanwhile, adding phthalic anhydride in multiple for 30 minutes. Secondly, the reaction solution is filtered, concentrated to saturation and cooled to room temperature. At last, product is obtained by crystallization and drying.

When you are using this chemical, please be cautious about it. As a chemical, it is irritating to eyes, respiratory system and skin. Besides, It may cause burns. During using it, wear suitable protective clothing, gloves and eye/face protection. Avoid contact with skin, eyes and do not breathe dust. If contact with eyes accidently, rinse immediately with plenty of water and seek medical advice. In case of accident or if you feel unwell seek medical advice immediately.

You can still convert the following datas into molecular structure:
1. Canonical SMILES: C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]
2. InChI: 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
3. InChIKey: IWZKICVEHNUQTL-UHFFFAOYSA-M

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
guinea pig	LD50	skin	> 1gm/kg (1000mg/kg)		Kodak Company Reports. Vol. 21MAY1971,
rat	LD50	oral	> 3200mg/kg (3200mg/kg)		Kodak Company Reports. Vol. 21MAY1971,

Product Name

Potassium hydrogen phthalate

Synthetic route

Potassium hydrogen phthalate Specification

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