
Ammonium Persulfate (APS) Ammonium peroxydisulfate - 500g
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Description
Ammonium Persulfate (APS)
Other Names: Ammonium peroxydisulfate
CAS Number: 7727-54-0
Sum Formula: (NH₄)₂S₂O₈
Molar Mass: 228.20 g/mol
Appearance: White, crystalline powder or granules
Chemical and Physical Properties
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Density: 1.98 g/cm³
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Melting Point: Decomposes at ~120°C
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Boiling Point: Not applicable (decomposes)
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Solubility in Water: Highly soluble (~80 g/100 mL at 25°C)
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Solubility in Other Solvents: Slightly soluble in alcohol
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Odor: Odorless
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pH: ~1–2 (1% solution)
Applications
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Polymer Industry: Used as a free-radical initiator for the polymerization of monomers such as acrylates and vinyl compounds
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Electronics & Metal Processing: Employed as an etching agent for printed circuit boards and a surface cleaner for metals
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Textile & Paper Industry: Used as a bleaching and desizing agent
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Laboratory Use: Common oxidizer in redox reactions and gel electrophoresis preparation
Safety
Signal Word: Danger
H272 (95.7%): May intensify fire; oxidizer [Danger Oxidizing liquids; Oxidizing solids]
H302 (> 99.9%): Harmful if swallowed [Warning Acute toxicity, oral]
H315 (99.9%): Causes skin irritation [Warning Skin corrosion/irritation]
H317 (> 99.9%): May cause an allergic skin reaction [Warning Sensitization, Skin]
H319 (99.9%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H334 (> 99.9%): May cause allergy or asthma symptoms or breathing difficulties if inhaled [Danger Sensitization, respiratory]
H335 (99.9%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
P210, P220, P233, P260, P261, P264, P264+P265, P270, P271, P272, P280, P284, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P333+P317, P337+P317, P342+P316, P362+P364, P370+P378, P403, P403+P233, P405, and P501
Handling and Storage
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Storage Conditions: Store in a tightly closed container in a dry, cool, well-ventilated area. Keep away from combustible substances
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Handling Precautions: Avoid contact with skin, eyes, and clothing. Do not mix with flammable materials. Use non-sparking tools