Deionized Water Extra Pure

1. Basic Identification Attributes

• Chemical Name: Deionized Water
• Common Name: DI Water / Demineralized Water
• CAS Number: 7732-18-5
• Chemical Formula: H₂O
• Grade: Extra Pure (Laboratory Grade, free from ionic contaminants)

2. Physical & Chemical Properties

• Appearance: Clear, colorless, odorless liquid
• Solubility: Completely miscible with most solvents
• pH: Typically between 5.5 – 7.5 (due to CO₂ absorption)
• Conductivity: <1 µS/cm (ultrapure), depending on production quality
• Boiling Point: 100 °C
• Freezing Point: 0 °C
• Density: 1.000 g/cm³ at 4 °C

3. Safety & Hazard Attributes

• GHS Classification: Not classified as hazardous
• NFPA Ratings:
  • Health: 0
  • Flammability: 0
  • Reactivity: 0
• First Aid Measures:
  • Inhalation / Skin / Eye / Ingestion: No adverse effects under normal conditions

4. Storage & Handling Attributes

• Storage Conditions:
  • Store in tightly sealed containers
  • Avoid contamination—use clean, inert, or sterilized containers
  • Best stored in glass or high-grade plastic containers (e.g., HDPE, PP, PTFE)
• Handling Advice:
  • Avoid contact with reactive chemicals that could leach into water
  • Prevent exposure to air if CO₂-sensitive applications require ultra-low conductivity

5. Regulatory & Compliance Attributes

• EINECS Number: 231-791-2
• UN Number: Not regulated
• REACH Status: Exempt (naturally occurring substance)

6. Applications in Laboratory

• Primary Use:
  • Essential solvent and diluent in most analytical and preparative procedures
• Other Uses:
  • Preparation of standards, reagents, buffers, and media
  • Rinsing and cleaning of glassware to avoid contamination
  • Feedwater for laboratory instruments (HPLC, AAS, ICP-MS, etc.)
  • Electrochemistry and pH measurements
  • Molecular biology and microbiology applications
• Cooling and autoclaving processes