3-Hydroxybenzoic acid
3-Hydroxybenzoic acid is a AISI 316L stainless steel (SS) corrosion inhibitor.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Journal of Applied Electrochemistry, 2005, 35(5):499-506.
3-Hydroxybenzoic acid as AISI 316L stainless steel corrosion inhibitorin a H 2 SO 4 –HF–H 2 O 2 pickling solution.[Reference:
WebLink]
METHODS AND RESULTS:
3-Hydroxybenzoic acid (3-HBA) was studied for possible use as a AISI 316L stainless steel (SS) corrosion inhibitor in an environmental-friendly aqueous pickling solution of 75 g l−1 sulphuric acid (H2SO4), 25 g l−1 hydrofluoric acid (HF) and 30 g l−1 hydrogen peroxide (H2O2). 3-HBA was tested in concentrations from 5 × 10−5 to 5 × 10−1 M at 298 and 313 K temperature. Inhibition efficiency increased with the 3-HBA concentration. The inhibitor mechanism is discussed in terms of the properties of the isotherm equations of Frumkin, Hill-de Boer and Kastening–Holleck mainly. The shape, the trend of the slopes along the curve and the existence of inflection points, were analysed as the characteristics that differentiate one adsorption equation from another.
CONCLUSIONS:
The best fit was obtained using the Frumkin isotherm model. The projected molecular area of 3-HBA was calculated as a structural parameter to elucidate its optimal inhibition mechanism.
Chinese journal of experimental traditional medical formulae, 2013.
Content Determination of 3-Hydroxybenzoic Acid in Artemisiae Argyi Folium (Carbonized and Processed with Vinegar) by HPLC.[Reference:
WebLink]
To study 3-Hydroxybenzoic acid in Artemisiae Argyi Folium(carbonized and processed with vinegar) that come from different arrears,which provide the theoretical basis of the quality control and rational use of Artemisiae Argyi Folium(carbonized and processed with vinegar).
METHODS AND RESULTS:
HPLC method,the analytical column was Prevail C 18 column(4.6 mm × 250 mm,5 μm).The mobile phase was acetonitrile0.1% phosphate(15 ∶ 85).The flow rate was 1.0 mL·min-1.The detection wavelength was 240 nm and the column temperature was set at 25 ℃. There was good linearity between the peak areas and concentration at the ranges of 0.010 02-0.501 00 μg for 3-Hydroxybenzoic acid(r = 1.000 0).The average recovery(n = 9) was 97.39% with RSD 0.99%.
CONCLUSIONS:
The method is accurate,simple and repeatable.The 3-Hydroxybenzoic acid in Artemisiae Argyi Folium(carbonized and processed with vinegar) of different arrears has significant difference.
