| Identification | More | [Name]
Potassium hydrogen phthalate | [CAS]
877-24-7 | [Synonyms]
BLUE HIGH-ACCURACY BUFFER, PH 10.000
BUFFER
BUFFER CONCENTRATE, PH 6.00
BUFFER CONCENTRATE, PH 7.00
BUFFER MIXTURE, PH 6.8
BUFFER O
BUFFER, PH 1.0
BUFFER, PH 1.00
BUFFER, PH 10.00
BUFFER, PH 10.00, COLOR CODE BLUE
BUFFER, PH 1.07
BUFFER PH 10, BLUE
BUFFER, PH 11.00
BUFFER, PH 1.2
BUFFER, PH 12.00
BUFFER, PH 12.45
BUFFER, PH 12.72
BUFFER, PH 1.68
BUFFER, PH 2.00
BUFFER, PH 2.5 | [EINECS(EC#)]
212-889-4 | [Molecular Formula]
C8H5KO4 | [MDL Number]
MFCD00146206 | [Molecular Weight]
204.22 | [MOL File]
877-24-7.mol |
| Chemical Properties | Back Directory | [Appearance]
white crystalline powder | [Melting point ]
295-300 °C (dec.) (lit.) | [Boiling point ]
98.5-99.5 ;°C/740 ;mmHg(lit .) | [bulk density]
900kg/m3 | [density ]
1.006 g/mL at 20 °C
| [storage temp. ]
Store at RT. | [solubility ]
H2O: 100 mg/mL, clear, colorless
| [form ]
Solid | [color ]
White | [Odor]
Odorless | [PH]
4.00-4.02 (25.0℃±0.2℃, 0.05M) | [PH Range]
3.8 - 4.0 (5% aq. sol.) | [Stability:]
Stable. Incompatible with strong oxidizing agents. | [Water Solubility ]
80 G/L (20 ºC) | [Merck ]
14,7612 | [BRN ]
3637128 | [InChIKey]
IWZKICVEHNUQTL-UHFFFAOYSA-M | [LogP]
-2.73 | [CAS DataBase Reference]
877-24-7(CAS DataBase Reference) | [EPA Substance Registry System]
877-24-7(EPA Substance) | [Absorption]
cut-off at 309nm in H2O at 0.1M |
| Safety Data | Back Directory | [Hazard Codes ]
Xi,C | [Risk Statements ]
R36/38:Irritating to eyes and skin .
R36/37/38:Irritating to eyes, respiratory system and skin .
R34:Causes burns. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S24/25:Avoid contact with skin and eyes .
S22:Do not breathe dust .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [RIDADR ]
UN 1789 8/PG 3 | [WGK Germany ]
1
| [RTECS ]
CZ4326000
| [F ]
34 | [TSCA ]
Yes | [HS Code ]
29173990 | [Toxicity]
LD50 orally in Rabbit: > 3200 mg/kg |
| Hazard Information | Back Directory | [Chemical Properties]
white crystalline powder | [Uses]
As primary standard for preparing volumetric alkali solutions, also as a buffer in pH determinations. | [General Description]
| [Flammability and Explosibility]
Notclassified | [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.] |
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