247588

Salicylic acid

ACS reagent, ≥99.0%

• Synonym(s): 2-Hydroxybenzoic acid
• Linear Formula: 2^-(HO)C₆H₄CO₂H
• CAS Number: 69-72-7
• Molecular Weight: 138.12
• Beilstein/REAXYS Number: 774890
• EC Number: 200-712-3
• MDL number: MFCD00002439
• UNSPSC Code: 12352100
• PubChem Substance ID: 24854876
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 200
• vapor density: 4.8 (vs air)
• vapor pressure: 1 mmHg ( 114 °C)
• assay: ≥99.0%
• impurities: H₂SO₄, passes test (darkened)
• ign. residue: ≤0.01%
• bp: 211 °C (lit.)
• mp: 158-161 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.001%; sulfate (SO₄^2-): ≤0.003%

Description

General description

Salicylic acid is mainly used as the precursor to synthesize aspirin, a commonly used analgesic and antipyretic. Due to its keratolytic action, it is also used in topical ointments.

Application

Salicylic acid has been used:

• as one of the chemical compound in exposure-based validation of in vitro gastrulation model employed in developmental toxicity screening assays
• as a reference standard in salicylate quantification by reverse-phase high-performance liquid chromatography (RP-HPLC)

Biochem/physiol Actions

Salicylic acid (SA) delivers local and systemic acquired resistance (LAR and SAR) against various diseases in plants. It acts as a secondary metabolite and regulate various physiological processes such as respiration, stomatal closure and senescence-associated gene expression. In addition, SA also controls abiotic stress, basal thermotolerance, nodulation in legumes and fruit yield. It plays a vital role in modulation of flowering and thermogenesis (heat production) in plants. SA together with reactive oxygen species (ROS) and nitric oxide (NO) triggers cell death in plants.

Safety Information

• pictograms: GHS08,GHS05,GHS07
• signalword: Danger
• hcodes: H302,H318,H361d
• pcodes: P202 - P264 - P280 - P301 + P312 - P305 + P351 + P338 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 2
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: 314.6 °F - closed cup
• flash_point_c: 157 °C - closed cup
• ppe: dust mask type N95 (US), Eyeshields, Gloves