p-OXYBENZALDEHYDE

PRODUCT IDENTIFICATION

CAS NO. 123-08-0

p-OXYBENZALDEHYDE

EINECS NO. 204-599-1
FORMULA HOC6H4CHO
MOL WT. 122.12

H.S. CODE

2912.49

TOXICITY

 

SYNONYMS 4-Hydroxybenzaldehyde; p-Hydroxybenzaldehyde;
p-Formylphenol; 4-Hydroxybenzenecarbonal; 4-Formylphenol;
SMILES

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE red-brown powder
MELTING POINT 116 - 118 C
BOILING POINT sublimes
SPECIFIC GRAVITY 1.129
SOLUBILITY IN WATER Soluble in hot water
pH  
VAPOR DENSITY  

AUTOIGNITION

 

NFPA RATINGS

 

REFRACTIVE INDEX

 
FLASH POINT

 

STABILITY

Stable under ordinary conditions

APPLICATIONS

p-Oxybenzaldehyde is used as an intermediate for the synthesis of pharmaceuticals ( e.g; Itopride,Trimethobenzamide, sulfanilamide medicines, ampicillin, semi-synthetic  penicillin, p-hydroxybenzoate glycosides), perfumery,agrochemicals and electroplating chemicals.
SALES SPECIFICATION

APPEARANCE

red-brown powder

ASSAY

99.0% min

MOISTURE

0.5% max
MELTING POINT 115 - 117 C
TRANSPORTATION
PACKING
25kgs in bag
HAZARD CLASS 8 (9.2)
UN NO. 1760
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38/ Safety Phrases: 24/25/28A/37/45

GENERAL DESCRIPTION OF BENZALDEHYDE

Benzaldehyde(also called Benzenecarbonal) is the simplest representative of the aromatic aldehydes. It is a colorless liquid aldehyde with a characteristic almond odor. It boils at 180°C, is soluble in ethanol, but is insoluble in water. Benzaldehyde is formed by partial oxidation of benzyl alcohol and readily oxidized to benzoic acid and is converted to addition products by hydrocyanic acid or sodium bisulfite. It is also prepared by oxidation of toluene or benzyl chloride or by treating benzal chloride with an alkali, e.g., sodium hydroxide. It is used chiefly in the synthesis of other organic compounds, ranging from pharmaceuticals to plastic additives and benzaldehyde is an important intermediate for the processing of perfume and flavouring compounds and in the preparation of certain aniline dyes . It is the first step in the synthesis for fragrances. It undergoes simultaneous oxidation and reduction with alcoholic potassium hydroxide, giving potassium benzoate and benzyl alcohol. It is converted to benzoin with alcoholic potassium cyanide, with anhydrous sodium acetate and acetic anhydride, giving cinnamic acid. Compounds which do not have alpha-hydrogen atoms cannot form an enolate ion and do not undergo electrophilic alpha-substitution and aldol condensation. Aromatic aldehydes such as benzaldehyde and formaldehyde may undergo disproportionation in concentrated alkali (Cannizaro's reaction); one molecule of the aldehyde is reduced to the corresponding alcohol and another molecule is simultaneously oxidized to the salt of a carboxylic acid. The speed of the reaction depends on the substituents in the aromatic ring. Two different types of aldehydes (aromatic and aliphatic) can undergo crossing reaction to form fomaldehyde and aromatic alcohols.