No corrode contains corrosive salts

CONTAINS: Zinc Chloride and Ammonium Chloride. PRECAUTIONS: May cause irritation to eyes, skin, digestive or respiratory system. Avoid direct contact, breathing of fumes, and ingestion. Wear adequate protective clothing and equipment. Use only with good ventilation. Wash thoroughly after use. FIRST AID: For any overexposure, get immediate medical attention after first aid is given. Eyes - Flush with clean water for 15 minutes. Skin - Wash with soap and water. Inhalation - Remove to fresh air. Ingestion - DO NOT INDUCE VOMITING. Only if conscious, give large amounts of water. FIRE AND SPILLS: For fire, use water fog, CO2, foam, or dry chemicals. Wipe up spills to prevent footing hazard. STORAGE AND HANDLING: Store in cool area. Keep container tightly closed. Do not reuse empty container. KEEP OUT OF REACH OF CHILDRE

Years ago I solder up some stuff with it and left it in the corner of the shop. It got pretty rusty.