Dipotassium Hydrogen Phosphate Extra Pure

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SHORT DESCRIPTION

Dipotassium Hydrogen Phosphate Extra Pure is a high-purity inorganic salt commonly used in laboratories as a buffering agent, particularly in the preparation of phosphate buffer solutions for biochemical and analytical procedures. It plays a vital role in maintaining stable pH conditions in enzymatic and molecular biology experiments. Additionally, it serves as a source of potassium and phosphorus in various chemical reactions and culture media. This extra pure grade ensures excellent consistency and low levels of contaminants, making it ideal for high-precision lab work. It should be stored in a cool, dry place, tightly sealed to avoid moisture absorption.

Description

USES

Primary Uses

  1. Buffer Preparation 
    • Commonly used to make phosphate buffer solutions in biochemistry, molecular biology, and analytical chemistry. 
  2. pH Control 
    • Acts as a mildly basic buffering agent to stabilize pH, especially in combination with monopotassium phosphate or phosphoric acid. 
  3. Analytical Reagent 
    • Employed in volumetric analysis, spectrophotometry, and as a component in media preparations. 

Secondary Applications

  • Culture Media – Used in microbial growth media to provide phosphates and potassium ions. 
  • Reagent-Grade Preparations – Assists in ion chromatography or as a base solution for chemical titrations. 
  • Water Chemistry Studies – Used in ion exchange and phosphate removal experiments.
KEY PRODUCT FEATURES

KEY ATTRIBUTES

  1. Basic Identification Attributes
  • Chemical Name: Dipotassium Hydrogen Phosphate 
  • Other Names: Potassium phosphate dibasic, Dipotassium phosphate 
  • Chemical Formula: Kâ‚‚HPOâ‚„ 
  • CAS Number: 7758-11-4 
  • Grade: Extra Pure (Laboratory Grade) 
  • Molecular Weight: 174.18 g/mol 
  • Appearance: White crystalline powder or granules 
  • Odor: Odorless

2. Physical & Chemical Properties

  • Melting Point: ~240 °C (decomposes) 
  • Solubility in Water: Soluble (149 g/L at 25 °C) 
  • pH (1% solution): ~8.6 – 9.6 
  • Density: ~2.44 g/cm³ 
  • Hygroscopicity: Slightly hygroscopic 
  • Stability: Stable under normal conditions

3. Safety & Hazard Attributes

  • GHS Classification: Not classified as hazardous 
  • Hazard Statements: None (generally considered low hazard) 
  • PPE Requirements: 
    • Lab coat 
    • Safety goggles 
    • Nitrile or latex gloves 
  • First Aid: 
    • Inhalation: Move to fresh air 
    • Skin Contact: Wash with soap and water 
    • Eye Contact: Rinse with plenty of water 
    • Ingestion: Rinse mouth, seek medical advice if unwell

4. Storage & Handling Attributes

  • Storage Conditions: 
    • Store in a cool, dry, and well-ventilated area 
    • Keep container tightly closed 
    • Protect from moisture and incompatible materials (strong acids) 
  • Handling Notes: 
    • Avoid generating dust 
    • Handle with standard laboratory precautions 

5. Regulatory & Compliance Attributes

  • EC Number: 231-834-5 
  • UN Number: Not applicable (non-hazardous) 
  • REACH Registration: Registered 
  • DOT Classification (US): Not regulated 
  • Hazard Class (Transport): Not classified

6. Laboratory Applications

  • Primary Uses: 
    • Buffering agent in biochemical and molecular biology labs 
    • Component of phosphate-buffered saline (PBS) 
    • Used in fertilizer research and nutrient media 
    • pH adjustment in laboratory experiments 
  • Other Uses: 
    • Food additive (when food-grade) 
    • Water treatment studies 
    • Reagent in pharmaceutical formulation R&D
SAFETY HANDLING PRECAUTIONS

SAFETY MEASURES

LABORATORY SAFETY & HANDLING

  • PPE Required: 
    • Lab coat 
    • Gloves (nitrile or latex) 
    • Safety goggles 
  • Storage Guidelines: 
    • Store in a cool, dry, well-ventilated area 
    • Keep container tightly sealed 
    • Avoid moisture exposure (hygroscopic in nature) 
  • Handling Tips: 
    • Use clean, dry tools to avoid contamination 
    • Prepare solutions fresh when possible to maintain buffer integrity 

FIRST AID MEASURES

  • Inhalation: Move to fresh air; seek attention if irritation persists 
  • Skin Contact: Wash with plenty of water and soap 
  • Eye Contact: Rinse with water for 15 minutes and consult a physician 
  • Ingestion: Rinse mouth; not expected to be toxic in small amounts but seek medical advice 

FIRE SAFETY MEASURES

  • Flammability: Not flammable 
  • Firefighting Media: Water spray, foam, dry chemical, or COâ‚‚ 
  • Decomposition Products: May release phosphorus oxides at high temperatures