o-PHTHALALDEHYDE

PRODUCT IDENTIFICATION
CAS NO. 643-79-8

o-PHTHALALDEHYDE

EINECS NO. 211-402-2
FORMULA C6H4-1,2-(CHO)2
MOL WT. 134.12

H.S. CODE

 

TOXICITY

 
SYNONYMS 1,2-Benzenedicarboxaldehyde; 2-Formylbenzaldehyde;
1,2-Benzenedialdehyde; 1,2-Phthalic Dicarboxyaldehyde; OPA; PA; Phtalaldehydes (French);
SMILES  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE Light yellow crystalline powder

MELTING POINT

 56 C
BOILING POINT  
SPECIFIC GRAVITY  

SOLUBILITY IN WATER

 Soluble
pH  
VAPOR DENSITY  

AUTOIGNITION

 

NFPA RATINGS

 Health: 2 ; Flammability: 1 ; Reactivity: 0

REFRACTIVE INDEX

 

FLASH POINT

110 C

STABILITY Stable under ordinary conditions

APPLICATIONS
Phthalaldehyde is used as a disinfectant and as a tanning agent in leather industry. It is useful for the sterilization of endoscopic instruments, thermometers, rubber and plastic equipment which cannot be sterilized by heating system. It is also used as an intermediate in synthesis of pharmaceuticals, medicines, and other organic compounds.
SALES SPECIFICATION

APPEARANCE

 Light yellow crystalline powder
PURITY

99.0% min

INDIVIDUAL IMPURITY

0.5% max

WATER

0.5% max

TRANSPORTATION
PACKING  
HAZARD CLASS 8
UN NO. 1759
REMARKS

In chemical sterilant field, phthalaldehyde, compare with glutaraldehyde, is not irritant to the eyes and nasal passages but has excellent stability over a wide range of pH (3-9), which does not require exposure monitoring, and has a barely perceptible odor. But phthaldialdehyde stains proteins gray including unprotected skin. Thus, it must be handled with use of gloves, eye protection, fluid-resistant gowns when handling contaminated instruments, contaminated equipment, and chemicals.