Home › Chemicals › Salicylic Acid CAS 69-72-7: Salicylic Acid (C7H6O3) Identity CAS Number 69-72-7 Molecular Formula C7H6O3 IUPAC Name 2-hydroxybenzoic acid Molecular Weight 138.12 g/mol SMILES c1ccc(c(c1)C(=O)O)OSynonyms salicylic acid, 2-hydroxybenzoic acid, ortho-hydroxybenzoic acid, o-hydroxybenzoic acid
2D Structure
Physical Properties Density 1.443 g/mL at 25°C Boiling Point 211.0°C Melting Point 159.0°C Flash Point 157.0°C Vapor Pressure 0.001 kPa at 20°C Refractive Index nD = 1.565 Dielectric Constant ε = 5.0
Safety & GHS Classification GHS05 Irritant
H302: Harmful if swallowed H315: Causes skin irritation H318: Causes serious eye damage H335: May cause respiratory irritation Storage: Store in a cool, dry area. Keep container tightly sealed. Light-sensitive — store in amber glass. Store away from strong bases, oxidizers, and iodine.
Material Compatibility Matrix Plastics Material Rating PTFE Excellent PVC Good PE Excellent PP Excellent PEEK Excellent PVDF Excellent
Rubbers Material Rating Viton Excellent NBR Good EPDM Excellent Silicone Good FKM Excellent
Metals Material Rating Stainless 316 Excellent Aluminum Good Copper Fair Brass Fair
Applications Acne treatment (keratolytic agent) Aspirin (acetylsalicylic acid) precursor Skin care product (exfoliant, anti-dandruff) Food preservative (antimicrobial) Dye and pigment intermediate Rubber antioxidant intermediate Laboratory analytical reagent Pharmaceutical intermediate External References: PubChem
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