Nitric Acid 70% d=1.42,

Nitric Acid 70% (d=1.42)

Description:

Nitric Acid 70% (d=1.42) is a highly concentrated solution of nitric acid (HNO₃) in water, commonly used in various chemical, industrial, and laboratory applications. The density (d=1.42) indicates a high concentration of nitric acid in the solution. Nitric acid is a strong oxidizing agent and corrosive acid, making it essential for reactions requiring high reactivity, such as metal etching, nitrate production, and aqua regia preparations.

Specifications:

• Chemical Formula: HNO₃

• Concentration: 70% by weight

• Density: 1.42 g/mL (at 20°C)

• Appearance: Colorless to slightly yellowish liquid

• Boiling Point: Approximately 120°C

• Melting Point: -42°C

• pH: Extremely low (strongly acidic)

• CAS Number: 7697-37-2

• Solubility: Miscible in water, with the ability to form aqueous solutions of varying concentrations

• Storage: Store in cool, dry, well-ventilated areas in corrosion-resistant containers (usually polyethylene or glass with plastic lining)

• Hazardous Properties:

  • Corrosive to skin, eyes, and mucous membranes

  • Oxidizing agent, can react violently with combustible materials

  • Toxic fumes (including nitrogen oxides) can be released when heated

🧪 Uses:

• Industrial Applications:

  • Metal etching and passivation, particularly for stainless steel and other metals

  • Nitrate production for fertilizers, explosives, and pharmaceuticals

  • Aqua regia preparation (a mixture of nitric acid and hydrochloric acid) for gold refining

• Chemical Synthesis:

  • Nitration of organic compounds (e.g., production of nitroaromatic compounds, explosives like TNT)

• Laboratory Applications:

  • Used for cleaning glassware (removes organic residues)

  • Inorganic synthesis (such as preparation of metal salts, metal oxide formation)

  • Titration standardization and other chemical analyses

• Environmental and Pollution Control:

  • Used in waste treatment, particularly for neutralizing alkaline waste

• Food and Beverage Industry:

  • Used in some food processing applications (but only in controlled, very dilute forms)

Features

• ✅ High Purity: 70% nitric acid solution with high chemical reactivity

• ✅ Oxidizing Power: Capable of strong oxidation reactions, making it ideal for metal treatment and preparation of nitrates

• ✅ Multiple Applications: Useful in diverse fields such as chemical manufacturing, environmental control, and laboratory procedures

• ✅ Easy to Handle for Industrial Use: Concentrated, but manageable with proper protective equipment

• ✅ Transparent Solution: Easy to observe and measure when preparing chemical reactions

• ✅ Stable for Storage: Remains stable when stored properly in a cool, dry, and corrosion-resistant container

• ✅ Corrosion Resistance: Excellent for specific metal etching and cleaning applications