Potassium Hydrogen Phthalate ER Qualigens, 500g

Potassium Hydrogen Phthalate ER Qualigens, 500g Specification

Boiling point
Not applicable

Molecular Weight
204.22 g/mol Carat

Packaging Type
Plastic Bottle

Purity
99.5%

Melting Point
295 C

Usage
Laboratory

CAS No
877-24-7

Physical State
Powder

Shelf Life
60 Months

Size
500g

Flash Point
Not applicable

Molecular Formula
KHC H O (also written C H KO )

Density
1.63 Gram per cubic centimeter(g/cm3)

Ph Level
4.0 5.0

Grade
ER (Extra Pure / Analytical Grade, Primary Standard)

Type
Scientific Lab Chemicals

Application
Laboratory

Appearance
White, odorless crystals

Purity(%)
99.5%

Potassium Hydrogen Phthalate ER Qualigens, 500g Trade Information

Minimum Order Quantity
1 Bottle

Delivery Time
5 Days

About Potassium Hydrogen Phthalate ER Qualigens, 500g

Potassium Hydrogen Phthalate (KHP) ER (Extra Pure) by Qualigens, in a 500g package, is a high-purity (typically 99.95%100.05%) crystalline powder. It serves as an acidimetric primary standard in analytical chemistry for standardizing alkaline volumetric solutions, and acts as a standard for pH buffer and COD measurements.

Key Characteristics & Applications

Primary Standard: Highly stable, non-hygroscopic (does not easily absorb moisture), and easy to dry, making it ideal for standardizing Sodium Hydroxide (NaOH) solutions.
pH Calibration: Used to calibrate and qualify pH meters and electrodes, as it yields highly stable, standard pH solutions.
COD Standard: Widely used to create standard solutions for Chemical Oxygen Demand (COD) tests in wastewater analysis.
Appearance & Purity: White crystalline powder with a typical purity of 99.95% - 100.05% (on a dried basis)
Technical Specifications
- Formula: CHKO
- Molecular Weight: 204.22 g/mol
- Grade: ER (Extra Pure) / ACS
- Solubility: Soluble in water (25 g/L at 20C), forming a colorless solution.

Analytical Grade Quality for Precise Results

Potassium Hydrogen Phthalate ER Qualigens stands out for its exceptional purity of 99.5%, making it an ideal choice for laboratory and research applications. As an Extra Pure (ER) or Analytical Grade chemical, it delivers high consistency and reliability in quantitative analyses, particularly in pH buffer standards and acidimetric titrations. Its consistent physical and chemical characteristics ensure that your experimental outcomes remain accurate over time.

Versatile Laboratory Applications

This product is commonly employed as a primary standard for pH calibration buffers and as a titration reagent due to its stable acidic properties (pH 4.0-5.0). Laboratory professionals rely on Potassium Hydrogen Phthalate for establishing baseline measurements and for the calibration of instruments, ensuring robust and reproducible data across scientific, educational, and quality control settings.

Safe and Convenient Handling

Packaged in a durable plastic bottle, Potassium Hydrogen Phthalate ER is easy to store and use within laboratories. Its white, odorless crystalline appearance and stable solid state minimize handling hazards, while the product's extended 60-month shelf life adds value and convenience for labs that require consistent reagents for ongoing research and routine analyses.

FAQ's of Potassium Hydrogen Phthalate ER Qualigens, 500g:

Q: How should Potassium Hydrogen Phthalate ER Qualigens be used in laboratory applications?

A: Potassium Hydrogen Phthalate ER Qualigens functions primarily as a standard for calibrating pH meters and conducting acid-base titrations. Measure and weigh the required amount accurately, dissolve it in distilled water, and use the prepared solution as needed in your laboratory protocols.

Q: What is the significance of its ER (Extra Pure) grade?

A: The ER (Extra Pure) grade ensures that the chemical meets stringent purity and quality standards, making it suitable for critical analytical procedures where accuracy and consistency are vital. This enhances reliability in experimental and quality control results.

Q: When should I replace my Potassium Hydrogen Phthalate stock?

A: The product has a notable shelf life of 60 months when stored properly. Replace or review your stock after this period or if the compound shows any signs of contamination, discoloration, or unusual odor to ensure experimental integrity.

Q: Where should Potassium Hydrogen Phthalate ER be stored?

A: Store the chemical in a tightly sealed plastic bottle, in a cool, dry location away from direct sunlight, heat sources, or incompatible substances to preserve its stability and purity over its shelf life.

Q: What are the benefits of using Potassium Hydrogen Phthalate as a calibration standard?

A: Its well-defined purity (99.5%) and stable chemical properties allow consistent and repeatable results in pH calibration and titration processes, ensuring accuracy in laboratory measurements and supporting reliable analytical outcomes.

Q: Can Potassium Hydrogen Phthalate ER Qualigens be used for all types of pH meter calibration?

A: Yes, due to its stable pH value (typically around 4.0-5.0) and primary standard status, it is commonly used as a reference standard for calibrating pH meters, especially in the acidic range. For other pH ranges, suitable alternative buffers should be used.

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