Ethylparaben

ETHYL PARABEN

Features: Molecular Formula: C9H10O3Colorless crystals or white crystalline powderUsed as a preservative in the food

Ethylparaben (ethyl para-hydroxybenzoate) is the ethyl ester of p-hydroxybenzoic acid. Its formula is HO-C6H4-CO-O-CH2CH3. It is used as an antifungal preservative. As a food additive, it has E number E214. Sodium ethyl para-hydroxybenzoate, the sodium salt of ethylparaben, has the same uses and is given the E number E215.Ethyl Hydroxybenzoate BP Ph Eur Grade Specifications Ethyl paraben Ethyl Parahydroxybenzoate, Ph Eur Grade Specifications C9H10O3 --- 166.2 --- CAS 120-47-8DEFINITION Ethyl 4-hydroxybenzoate. Content: 98.0 per cent to 102.0 per cent.CHARACTERS Appearance: White or almost white, crystalline powder or colourless crystals. Solubility: Very slightly soluble in water, freely soluble in alcohol and in methanol.IDENTIFICATION First identification A, B. Second identification A, C, D. A. Melting point 115C to 118C. B. Infrared absorption spectrophotometry. Comparison ethyl parahydroxybenzoate CRS. C. Examine the chromatograms obtained in the test for related substances. Results: The principal spot in the chromatogram obtained with test solution (b) is similar in position and size to the principal spot in the chromatogram obtained with reference solution (b). D. To about 10 mg in a test-tube add 1 ml of sodium carbonate solution, boil for 30 s and cool (solution A). To a further 10 mg in a similar test-tube add 1 ml of sodium carbonate solution; the substance partly dissolves (solution B). Add at the same time to solution A and solution B 5 ml of aminopyrazolone solution and 1 ml of potassium ferricyanide solution and mix. Solution B is yellow to orange-brown. Solution A is orange to red, the colour being clearly more intense than any similar colour which may be obtained with solution B.TESTS Solution S: Dissolve 1.0 g in alcohol and dilute to 10 ml with the same solvent. Appearance of solution: Solution S is clear and not more intensely coloured than reference solution. Acidity: To 2 ml of solution S add 3 ml of alcohol, 5 ml of carbon dioxide-free water and 0.1 ml of bromocresol green solution. Not more than 0.1 ml of 0.1 M sodium hydroxide is required to change the colour of the indicator to blue. Related substances: To pass the test (0.5 per cent). Sulphated ash: Maximum 0.1 per cent, determined on 1.0 g.ASSAY To 1.000 g add 20.0 ml of 1 M sodium hydroxide. Heat at about 70C for 1 h. Cool rapidly in an ice bath. Prepare a blank in the same manner. Carry out the titration on the solutions at room temperature. Titrate the excess sodium hydroxide with 0.5 M sulphuric acid , continuing the titration until the second point of inflexion and determining the end-point potentiometrically. 1 ml of 1 M sodium hydroxide is equivalent to 166.2 mg of C9H10O3.IMPURITIES A. R = H: 4-hydroxybenzoic acid, B. R = CH3: methyl 4-hydroxybenzoate, C. R = CH2-CH2-CH3: propyl 4-hydroxybenzoate, D. R = CH2-CH2-CH2-CH3: butyl 4-hydroxybenzoate.

Ethyl Paraben

The chemical name for Ethyl Paraben B.P is ethyl hydroxy benzoate. The molecular formula is C9h10o3 with the molecular weight of 166. 2, CAS Number 120-47-8 and reference is bp- 2002. The shelf life of the chemical is 5 years and is available in packing of 25 Kg and 20 kg(4 x 5kg). It is recommended to store the product in tightly closed containers. It is widely used as an Antimicrobial Preservative. The various specifications of the chemical are: Characters: a white or almost white powder, crystalline powder or colourless crystals, very slightly soluble in water, freely soluble in alcohol and in methanol.Identification: -First identification: a, b. -Second identification: a, c, d. Test A: Melts between 115 c and 118 c.Test B: the infrared absorption spectrum is concordant with the reference spectrum of ethyl paraben or with the spectrum obtained from ethyl paraben crs.Test C: examine the chromatograms obtained in the test for related substances. The principle spot in the chromatogram obtained with test solution (b) is similar in position and size to the principle spot in the chromatogram obtained with reference solution (b).Test D: to about 10 mg in a test tube add 1 ml of sodium carbonate solution, heat to boiling for 30 seconds and cool (solution a) to a further 10mg in a test tube add 1 ml of sodium carbonate solution, the substance partly dissolves (solution b). Add at the same time to each of solutions a and b 5 ml of aminopyrazolone solution r and 1 ml of potassium ferricyanide solution r and mix. Solution b is yellow to orange brown. Solution a is orange to red and the colour is clearly more intense than any similar colour that may be obtained with solution b.Appearance of solution: 10% w/v solution in ethanol (95%) is clear and not more intensely coloured than reference solution prepared by mixing 1. 5 ml ferric chloride colorimetric solution, 0. 8 ml cobaltous chloride colorimetric solution, 0. 2 ml cupric sulphate colorimetric solution and 97. 5 ml of 1% w/v hcl solution.Acidity: Dissolve 1.0 g in sufficient ethanol (95%) to produce 10 ml. To 2 ml of the solution add 3 ml of alcohol R, 5 ml of carbon dioxide-free water and 0.1 ml of bromocresol green solution R. Not more than 0.1ml of 0.1M sodium hydroxide is required to change the colour of the solution to blue.Related substances: Not more than 0.5 %Sulphated ash (w/w): Not more than 0.1 %.Assay on anhydrous basis: 98.0 to 102.0 %.Additional test Loss on Drying (80 C/2h),w/w: Not more than 0.5%.

Product Name: Ethylparaben Sodium Ethylparaben Synonyms: Ethyl p-Hydroxybenzoate, Eethyl paraben, Ethyl 4-hydroxybenzoate Sodium Ethyl p-Hydroxybenzoate, Ethylparaben Sodium, Ethyl 4-hydroxybenzoate sodium salt Characteristics: white crystalline powder. white hygroscopic powder CAS Number: 120-47-8 35285-68-8 Formula: C9H10O3 C9H9NaO3

Product Name: Ethylparaben Sodium Ethylparaben Synonyms: Ethyl p-Hydroxybenzoate, Eethyl paraben, Ethyl 4-hydroxybenzoate Sodium Ethyl p-Hydroxybenzoate, Ethylparaben Sodium, Ethyl 4-hydroxybenzoate sodium salt Characteristics: white crystalline powder. white hygroscopic powder CAS Number: 120-47-8 35285-68-8 Formula: C9H10O3 C9H9NaO3

Product Name: Ethylparaben Sodium Ethylparaben Synonyms: Ethyl p-Hydroxybenzoate, Eethyl paraben, Ethyl 4-hydroxybenzoate Sodium Ethyl p-Hydroxybenzoate, Ethylparaben Sodium, Ethyl 4-hydroxybenzoate sodium salt Characteristics: white crystalline powder. white hygroscopic powder CAS Number: 120-47-8 35285-68-8 Formula: C9H10O3 C9H9NaO3

Product Name: Ethylparaben Sodium Ethylparaben Synonyms: Ethyl p-Hydroxybenzoate, Eethyl paraben, Ethyl 4-hydroxybenzoate Sodium Ethyl p-Hydroxybenzoate, Ethylparaben Sodium, Ethyl 4-hydroxybenzoate sodium salt Characteristics: white crystalline powder. white hygroscopic powder CAS Number: 120-47-8 35285-68-8 Formula: C9H10O3 C9H9NaO3

Product Name: Ethylparaben Sodium Ethylparaben Synonyms: Ethyl p-Hydroxybenzoate, Eethyl paraben, Ethyl 4-hydroxybenzoate Sodium Ethyl p-Hydroxybenzoate, Ethylparaben Sodium, Ethyl 4-hydroxybenzoate sodium salt Characteristics: white crystalline powder. white hygroscopic powder CAS Number: 120-47-8 35285-68-8 Formula: C9H10O3 C9H9NaO3

Ethyl Paraben

ETHYL PARABEN USP PHEUR JP (JAPAN)

Product Name: Ethylparaben Sodium Ethylparaben Synonyms: Ethyl p-Hydroxybenzoate, Eethyl paraben, Ethyl 4-hydroxybenzoate Sodium Ethyl p-Hydroxybenzoate, Ethylparaben Sodium, Ethyl 4-hydroxybenzoate sodium salt Characteristics: white crystalline powder. white hygroscopic powder CAS Number: 120-47-8 35285-68-8 Formula: C9H10O3 C9H9NaO3

Product Name: Ethylparaben Sodium Ethylparaben Synonyms: Ethyl p-Hydroxybenzoate, Eethyl paraben, Ethyl 4-hydroxybenzoate Sodium Ethyl p-Hydroxybenzoate, Ethylparaben Sodium, Ethyl 4-hydroxybenzoate sodium salt Characteristics: white crystalline powder. white hygroscopic powder CAS Number: 120-47-8 35285-68-8 Formula: C9H10O3 C9H9NaO3

Product Name: Ethylparaben Sodium Ethylparaben Synonyms: Ethyl p-Hydroxybenzoate, Eethyl paraben, Ethyl 4-hydroxybenzoate Sodium Ethyl p-Hydroxybenzoate, Ethylparaben Sodium, Ethyl 4-hydroxybenzoate sodium salt Characteristics: white crystalline powder. white hygroscopic powder CAS Number: 120-47-8 35285-68-8 Formula: C9H10O3 C9H9NaO3

Chemical Name Ethyl Hydroxy Benzoate Molecular Formula C9H10O3 Molecular Weight 166.2 Structural Formula CAS Number 120-47-8 Reference USP-25 / NF 19 Packing 25 kg, 20 kg(4 x 5kg) The Shelf-life 5 years Storage conditions and precautions Preserve in well-closed containers. Use Antimicrobial Preservative

Ethylparaben

Ethylparaben

Ethyl Paraben N.F

Ethyl Paraben Ip/Bp/Usp

Ethyl Paraben