4-dimethylaminobenzaldehyde 99% AR [100-10-7] 4-dimethylaminobenzaldehyde is a reagent that is used to detect indole and identify positive and indole negative microorganisms. Uses creates colored condensation products (Schiff bases) with pyrroles 1 and primary amines 2. Uses 4- (dimethylamino) benzaldehyde in the Ehrlich reagent for spectrophotometric determination of hydrazine in the reaction to form azo dyes. 4- (dimethylamino) benzaldehyde is used to determine urinary bilirubin and porphobilinogen. Used as a derivatizing agent.
Melting point: 72-75C (lit.)
Boiling point: 176-177C (17 mmHg)
Density: 1.10 g / ml at 20C
Vapor pressure: <0.1 hPa (20C)
Refractive index: n20 / D1,417
Storage temperature: 2-8C
solubility: alcohol: positive test (APHA≤60)
pka: pK1: 1.647 (+1) (25C)
Color: white to pale yellow
Odor: characteristic odor
Solubility in water: 0.3g / L (20C)
Sensitive: Sensitive to air
Labeling of hazardous chemicals and mixtures that are part of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). The pictograms recommended by GHS have the shape of a square set on the top. They should contain a black symbol on a white background with a red border.
Priority rules to be observed in connection with the labeling of a substance:
– the skull and crossbones, the exclamation mark pictogram should not be added.
– corrosive effect, the exclamation mark pictogram should not be added if it concerns eye or skin irritation.
– health hazard determining respiratory sensitization, the exclamation mark pictogram should not be added if it concerns skin sensitization or irritation to eyes or skin.
Source: GHS pictograms
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