salicylic acid
CAS No.: 69-72-7 Formula: C7H6O3 Molecular Weight: 138.12100
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salicylic acid

CAS No.: 69-72-7 Formula: C7H6O3 Molecular Weight: 138.12100
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Salicylic acid (from Latin salix, willow tree) is a monohydroxybenzoic acid, a type of phenolic acid and a beta hydroxy acid. It has the formula C7H6O3. This colorless crystalline organic acid is widely used in organic synthesis and functions as a plant hormone. It is derived from the metabolism of salicin. In addition to serving as an important active metabolite of aspirin (acetylsalicylic acid), which acts in part as a prodrug to salicylic acid, it is probably best known for its use as a key ingredient in topical anti-acne products. The salts and esters of salicylic acid are known as salicylates. The medicinal part of the plant is the inner bark.
It is on the WHO Model List of Essential Medicines, the most important medications needed in a basic health system.

Basic Info

Numbering system

MDL number MFCD00002439
EINECS number 200-712-3


Appearance & Physical State white to off-white crystalline powder
Density 1.44
Boiling Point 211ºC (20 mmHg)
Melting Point 158-161ºC
Flash Point 157ºC
Refractive Index 1.565
Water Solubility 1.8 g/L (20 ºC)
Stability Stable. Substances to be avoided include oxidizing agents, strong bases, iodine, fluorine. Combustible. Sensitive to light.
Storage Condition Store at RT.
Vapor Density 4.8 (vs air)
Vapor Pressure 1 mm Hg ( 114 °C)

Safety Info

RTECS VO0525000
Safety Statements S26-S37/39
HS Code 2918211000
WGK Germany 1
Risk Statements R22; R36/37/38; R41
Hazard Codes Xn
Hazard Declaration H302; H318
Caution Statement P280; P301 + P312 + P330; P305 + P351 + P338 + P310
Symbol GHS05, GHS07
Signal Word Danger
Predict 1H proton NMRExpand

NMR Spectrum Predict 1H proton NMR

IR : KBr discExpand
Mass Expand
Raman : 4880 A,200 M,powderExpand
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