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Glycol Salicylate or 2-Hydroxyethyl Salicylate or Ethylene Glycol Monosalicylate
CAS Number: 87-28-5
Molecular Formula: C9H10O4
Molecular Weight: 182.17
Glycol Salicylate or 2-Hydroxyethyl Salicylate or Ethylene Glycol Monosalicylate
Glycol Salicylate or 2-Hydroxyethyl Salicylate or Ethylene Glycol Monosalicylate is not traced in USP monograph.
Glycol Salicylate or 2-Hydroxyethyl Salicylate or Ethylene Glycol Monosalicylate is a salicylate used to treat mild to moderate muscle pain. Glycol Salicylate or 2-Hydroxyethyl Salicylate or Ethylene Glycol Monosalicylate is used in many topical creams and sprays for the relief of aches, pains, and stiffness of the muscles, joints, and tendons.
Hydroxyethyl Salicylate BP Ph Eur Grade Specifications:
C9H10O4 --- 182.2 CAS 87-28-5
DEFINITION
2-Hydroxyethyl 2-hydroxybenzoate.
Content: 98.0 per cent to 102.0 per cent.
CHARACTERS
Appearance: Oily, colourless or almost colourless liquid, or colourless crystals.
Solubility: Sparingly soluble in water, very soluble in acetone and in methylene chloride, freely soluble in ethanol (96 per cent).
Melting point: About 21C.
IDENTIFICATION
First identification: A, B
Second identification: A, C, D, E
A. Refractive index.
B. Infrared absorption spectrophotometry.
C. Examine the chromatograms ---.
D. To 1 mL of solution S (see Tests), add 1 mL of water and 0.2 mL of ferric chloride solution R2. A violet-red colour appears which disappears immediately after the addition of 2 mL of dilute acetic acid. A very faint violet colour may remain.
E. In a test tube 160 mm long, mix 1.0 g with 2.0 g of finely powdered manganese sulfate. Insert 2 cm into the test-tube a strip of filter paper impregnated with a freshly prepared mixture of 1 volume of a 20 per cent V/V solution of diethanolamine and 11 volumes of a 50 g/L solution of sodium nitroprusside adjusted to pH 9.8 with 1 M hydrochloric acid. Heat the test-tube over a naked flame for 1-2 min. The filter paper becomes blue.
TESTS
Solution S: Dissolve 2.5 g in 40 mL of ethanol (96 per cent) and dilute to 50 mL with distilled water.
Appearance of solution: Solution S is clear and colourless.
Acidity or alkalinity: To 2 mL of solution S add 0.1 mL of methyl red solution and 0.2 mL of 0.01 M sodium hydroxide. The solution is yellow. Add 0.3 mL of 0.01 M hydrochloric acid. The solution is red.
Relative density: 1.252 to 1.257.
Refractive index: 1.548 to 1.551.
Related substances: To pass the test by thin-layer chromatography.
Chlorides: Maximum 100 ppm.
Sulfates: Maximum 250 ppm.
Sulfated ash: Maximum 0.1 per cent, determined on 1.0 g.
Storage: Protected from light.
Glycol Salicylate or 2-Hydroxyethyl Salicylate or Ethylene Glycol Monosalicylate is also available as per EP Grade monograph.
Please visit SDS Safety Data Sheet of Glycol Salicylate or 2-Hydroxyethyl Salicylate or Ethylene Glycol Monosalicylate Suppliers.
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