English name: Vanillin; Vanillic aldehyde; 4-Hydroxy-3-methoxybenzaldehyde; 3-Methoxy-4-hydroxybenzaldehyde Other names: vanillin; vanillin; vanillin; vanillin; 3-methoxy-4 -hydroxybenzaldehyde CAS No.: 121-33-5 C8H8O3=152.15 Grade: AR Content: ≥99.5% Melting point: 81.0～83.0°C Color: acceptable dry weight loss: ≤0.2% Ethanol dissolution test: qualified aroma: qualified burning residue: ≤0.02% Sodium hydroxide dissolution test: Qualified traits: white or very yellowish crystal, with aromatic odor, gradually oxidized in exposed air, sensitive to moisture, affected by light. Solubility in water: 10 g / L (25 ° C), 1 g dissolved in 100 ml of water, 16 ml of 80 ° C hot water, about 20 ml of glycerin. It is easily soluble in water, soluble in alcohol, chloroform, ether, carbon disulfide, glacial acetic acid, pyridine and lye. It is also soluble in oil and alkali hydroxide solution. The solution is acidic to litmus. Low toxicity, half lethal dose (rat, oral) 1580mg/kg. Irritating. Density: 1.056; Boiling point: 285 ° C. Uses: biochemical research. Testing protein, azaindole, phloroglucinol, tannins, iron ions, determination of chlorine, flavorings from benzoic acid, determination of methoxy by organic microanalysis: RT, protected from light
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