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Potassium hydrogen phthalate

Product Name
Potassium hydrogen phthalate
CAS No.
877-24-7
Chemical Name
Potassium hydrogen phthalate
Synonyms
PBS;BUFFER;Potassium biphthalate;PHOSPHATE BUFFER SOLUTION;BUFFER SOLUTION;Potassium acid phthalate;Potassium hydrogen;KAP;PHOSPHATE BUFF, PH 7.5;Potassium hydrogen phthalate, acidimetric standard
CBNumber
CB1132397
Molecular Formula
C8H5KO4
Formula Weight
204.22
MOL File
877-24-7.mol
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Potassium hydrogen phthalate Property

Melting point:
295-300 °C (dec.) (lit.)
Boiling point:
98.5-99.5 ;°C/740 ;mmHg(lit .)
Density 
1.006 g/mL at 20 °C
storage temp. 
Store at +5°C to +30°C.
solubility 
H2O: 100 mg/mL, clear, colorless
form 
Solid
color 
White
Odor
Odorless
PH Range
3.8 - 4.0 (5% aq. sol.)
PH
4.00-4.02 (25.0℃±0.2℃, 0.05M)
Water Solubility 
80 G/L (20 ºC)
Merck 
14,7612
BRN 
3637128
Stability:
Stable. Incompatible with strong oxidizing agents.
InChIKey
IWZKICVEHNUQTL-UHFFFAOYSA-M
LogP
-2.73
CAS DataBase Reference
877-24-7(CAS DataBase Reference)
EPA Substance Registry System
Monopotassium phthalate (877-24-7)
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Safety

Hazard Codes 
Xi,C,T
Risk Statements 
36/38-36/37/38-34-61-60
Safety Statements 
26-36-24/25-22-45-36/37/39-53
RIDADR 
UN 1789 8/PG 3
WGK Germany 
1
RTECS 
CZ4326000
34
TSCA 
Yes
HS Code 
29173990
Toxicity
LD50 orally in Rabbit: > 3200 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P337+P313IF eye irritation persists: Get medical advice/attention.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
PX1476
Product name
Potassium Hydrogen Phthalate
Purity
Meets ACS Specifications GR ACS
Packaging
125G
Price
$144
Updated
2024/03/01
Sigma-Aldrich
Product number
PX1476
Product name
Potassium Hydrogen Phthalate
Purity
Meets ACS Specifications GR ACS
Packaging
500G
Price
$174
Updated
2024/03/01
Sigma-Aldrich
Product number
PX1476
Product name
Potassium Hydrogen Phthalate
Purity
Meets ACS Specifications GR ACS
Packaging
2.5KG
Price
$278
Updated
2024/03/01
Sigma-Aldrich
Product number
PX1476
Product name
Potassium Hydrogen Phthalate
Purity
Meets ACS Specifications GR ACS
Packaging
12KG
Price
$1450
Updated
2024/03/01
Sigma-Aldrich
Product number
P5244
Product name
Phosphate buffer solution
Purity
0.1?M
Packaging
100mL
Price
$55.1
Updated
2024/03/01
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Potassium hydrogen phthalate Chemical Properties,Usage,Production

Chemical Properties

white crystalline powder

Uses

As primary standard for preparing volumetric alkali solutions, also as a buffer in pH determinations.

Uses

As a primary standard for preparing volumetric alkali solutions and as a buffer in pH determinations. Potassium hydrogen phthalate is used as a primary standard for acid- base titrations as well as for calibrating pH meters. It acts as a buffer in pH determination. It finds application as a useful standard for total organic carbon testing.

Uses

Potassium hydrogen phthalate [KHP; pH(S) = 4.005 (25 °C)] is a certified secondary standard reference material used as a calibration buffer standard for pH instruments or pH electrodes.

General Description

SRM 2185_cert SRM 2185 _SDS

Flammability and Explosibility

Not classified

Purification Methods

Crystallise it first from a dilute aqueous solution of K2CO3, then H2O (3mL/g) between 100o and 0o. Before being used as a standard in volumetric analysis, analytical grade potassium hydrogen phthalate should be dried at 120o for 2hours, then allowed to cool in a desiccator. [Beilstein 9 IV 3169.]

Potassium hydrogen phthalate Preparation Products And Raw materials

Raw materials

Preparation Products

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Potassium hydrogen phthalate Suppliers

Shanghai Aladdin Bio-Chem Technology Co.,LTD
Tel
400-400-6206333 18521732826
Fax
021-50323701
Email
market@aladdin-e.com
Country
China
ProdList
25003
Advantage
65
Manhag Testing Technology Co., Ltd
Tel
020-020-3846236 17688849268
Email
2443244976@qq.com
Country
China
ProdList
7775
Advantage
58
Hubei Dongcao Chemical Technology Co., Ltd
Tel
027-83261126 18971318572
Email
2969475037@qq.com
Country
China
ProdList
5000
Advantage
58
Jiangyin shell Chemical Co., Ltd
Tel
15312220685
Email
3750554602@qq.com
Country
China
ProdList
140
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
94657
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
3B Pharmachem (Wuhan) International Co.,Ltd.
Tel
821-50328103-801 18930552037
Fax
86-21-50328109
Email
3bsc@sina.com
Country
China
ProdList
15839
Advantage
69
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
Advantage
81
Beijing HwrkChemical Technology Co., Ltd
Tel
010-89508211 18501085097
Fax
010-89508210
Email
sales.bj@hwrkchemical.com
Country
China
ProdList
8418
Advantage
55
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View Lastest Price from Potassium hydrogen phthalate manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
Potassium hydrogen phthalate 877-24-7
Price
US $70.00/kg
Min. Order
1kg
Purity
99
Supply Ability
5000
Release date
2024-06-06
Hebei Weibang Biotechnology Co., Ltd
Product
Potassium hydrogen phthalate 877-24-7
Price
US $10.00/KG
Min. Order
100KG
Purity
99%
Supply Ability
100 mt
Release date
2024-10-31
Hebei Chuanghai Biotechnology Co,.LTD
Product
Potassium Hydrogen Phthalate 877-24-7
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
10000kg
Release date
2024-08-21

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  • BUFFER, PH 1.07
  • BUFFER PH 10, BLUE
  • BUFFER, PH 2.5
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  • BUFFER SOLUTION PH 3.776
  • BUFFER SOLUTION, PH 4.0
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