Also known as: Rosin flux, Acid flux, No-clean flux, Flux paste
Quick Facts
CAS Number
26264-06-2
Signal Word
WARNING
GHS Hazard Classes
harmful
NFPA Rating
Health: 1 / Flammability: 1 / Reactivity: 0
Common Names
Rosin flux, Acid flux, No-clean flux, Flux paste
Hazard Summary
⚠ WARNING: Activated rosin flux fumes are respiratory sensitizers — cause occupational asthma in electronics and soldering workers. Colophony (rosin) is an OSHA-recognized occupational asthma agent. Use fume extraction.
GHS Hazard Pictograms
⚠ Harmful/Irritant
Hazard Statements (H-codes)
H302 – Harmful if swallowed
H312 – Harmful in contact with skin
H319 – Causes serious eye irritation
H332 – Harmful if inhaled
Precautionary Statements (P-codes)
P260 – Do not breathe fumes
P271 – Use only in well-ventilated area
P280 – Wear eye/skin protection
First Aid Measures (Section 4)
👁Eye Contact▼
Flush with water for 15 minutes. Seek medical attention if irritation persists.
🖐Skin Contact▼
Wash with soap and water.
🫁Inhalation▼
Remove to fresh air. Report respiratory symptoms to physician. Rosin fume sensitization causes permanent occupational asthma.
🫦Ingestion▼
Rinse mouth. Call Poison Control (1-800-222-1222).
Storage & Handling
🔒 Storage & Handling: Store in cool, dry place. Keep acid fluxes away from metals. Reseal containers after use.