Hydrogen Peroxide (H₂O₂) is a versatile chemical with strong oxidizing properties, commonly used in various industrial, medical, and domestic applications. Its concentration affects its uses and safety considerations. Here’s an overview of 50% and 35% hydrogen peroxide:
Hydrogen Peroxide (H₂O₂) is a versatile chemical with strong oxidizing properties, commonly used in various industrial, medical, and domestic applications. Its concentration affects its uses and safety considerations. Here’s an overview of 50% and 35% hydrogen peroxide:
Hydrogen Peroxide 50%
Chemical Properties:
Chemical Formula: H₂O₂
Molecular Weight: 34.01 g/mol
Density: Approximately 1.4 g/cm³
Melting Point: -0.43°C (31.2°F)
Boiling Point: 151°C (304°F)
Solubility: Miscible with water in all proportions.
Physical Characteristics:
Appearance: Colorless liquid.
Odor: Slightly sharp, acrid odor.
pH: Typically around 1-2, highly acidic.
Common Uses:
Industrial Applications:
Bleaching Agent: Used in the textile and paper industries for bleaching.
Chemical Synthesis: Acts as an oxidizing agent in various chemical syntheses.
Wastewater Treatment: Applied in advanced oxidation processes to treat industrial wastewater.
Medical and Laboratory Uses:
Disinfectant: Used as a high-strength disinfectant for surfaces and equipment in medical settings.
Sterilization: Employed in the sterilization of medical and laboratory equipment.
Household Cleaning:
Strong Cleaner: Sometimes used in industrial-grade cleaning solutions, though less common in consumer products due to its high concentration.
Safety Considerations:
Highly Corrosive: Can cause severe burns and damage to skin and eyes. Proper protective equipment (gloves, goggles) should be used.
Oxidizing Agent: Can react violently with organic materials and reducing agents. Store away from flammable materials.
Storage: Should be stored in cool, dark conditions, preferably in stabilized containers to prevent decomposition.
Hydrogen Peroxide 35%
Chemical Properties:
Chemical Formula: H₂O₂
Molecular Weight: 34.01 g/mol
Density: Approximately 1.1 g/cm³
Melting Point: -0.43°C (31.2°F)
Boiling Point: 151°C (304°F)
Solubility: Miscible with water.
Physical Characteristics:
Appearance: Colorless liquid.
Odor: Sharp, acrid smell.
pH: Around 1-2, highly acidic.
Common Uses:
Industrial Applications:
Bleaching Agent: Used in the pulp and paper industry for bleaching processes.
Oxidizer: Used in chemical synthesis and oxidation reactions.
Disinfection: Applied in disinfection and sterilization processes.
Medical and Laboratory Uses:
Disinfectant: Used for disinfection and sterilization purposes in laboratory settings.
Antiseptic: Occasionally used as a disinfectant for minor wounds, though less common at this concentration due to its strong nature.
Household and Commercial Uses:
Cleaner: Can be used in commercial cleaning products and some heavy-duty household cleaning solutions.
Safety Considerations:
Highly Concentrated: Even more reactive and corrosive than 50% solutions. Extreme caution is needed.
Handling Precautions: Requires protective clothing, gloves, and eye protection. Avoid inhalation of vapors.
Storage: Store in a cool, dark place away from organic materials and contaminants. Use containers designed to withstand high pressures as hydrogen peroxide can decompose and release oxygen.
General Safety and Handling Guidelines for Both Concentrations:
Personal Protective Equipment (PPE): Always wear appropriate PPE, including gloves, goggles, and lab coats, when handling hydrogen peroxide.
Ventilation: Ensure good ventilation in areas where hydrogen peroxide is used or stored to avoid inhaling fumes.
Emergency Procedures: Be aware of emergency procedures for spills or accidental exposure, including eyewash stations and safety showers.
Disposal: Follow local regulations for the disposal of hydrogen peroxide. Dilution and neutralization with suitable substances may be required before disposal.
Chemical formula
H2O2
Molar mass
34.014 g·mol−1
Appearance
Very light blue liquid
Odor
slightly sharp
Density
1.11 g/cm3 (20 °C, 30% (w/w) solution)[1]
1.450 g/cm3 (20 °C, pure)
Melting point
−0.43 °C (31.23 °F; 272.72 K)
Boiling point
150.2 °C (302.4 °F; 423.3 K) (decomposes)
Solubility in water
Miscible
Solubility
soluble in ether, alcohol
insoluble in petroleum ether
log P
-0.43[2]
Vapor pressure
5 mmHg (30 °C)[3]
Acidity (pKa)
11.75
Magnetic susceptibility (χ)
−17.7·10−6 cm3/mol
Refractive index (nD)
1.4061
Viscosity
1.245 cP (20 °C)
Dipole moment
2.26 D
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