6448-95-9 Usage
Uses
Pigment Red 22 is used in method for increasing solubility of industrial azo pigments for NMR spectra and assignments of their NMR peaks.
Properties and Applications
TEST ITEMS
SPECIFICATION
APPEARANCE
RED POWDER
SHADE
YELLOWISH
HEAT RESISTANCE
140 °C min
LIGHT FASTNESS
6
ACID RESISTANCE
4
ALKALI RESISTANCE
4
FASTNESS TO BLEEDING
4
OIL ABSORPTION
40-50%
SPECIFIC SURFACE
28 m
2
/g
DENSITY
1.50 g/cm
3
RESIDUE ON 80 MESH
5.0% max
WATER SOLUBLE
1.0% max
VOLATITE 105 °C
1.0% max
TINTING STRENGTH
100-105 %
TEST ITEMS
SPECIFICATION
APPEARANCE
RED POWDER
SHADE
YELLOWISH
HEAT RESISTANCE
140 °C min
LIGHT FASTNESS
6
ACID RESISTANCE
4
ALKALI RESISTANCE
4
FASTNESS TO BLEEDING
4
OIL ABSORPTION
40-50%
SPECIFIC SURFACE
28 m
2
/g
DENSITY
1.50 g/cm
3
RESIDUE ON 80 MESH
5.0% max
WATER SOLUBLE
1.0% max
VOLATITE 105 °C
1.0% max
TINTING STRENGTH
100-105 %
Check Digit Verification of cas no
The CAS Registry Mumber 6448-95-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,4 and 8 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 6448-95:
(6*6)+(5*4)+(4*4)+(3*8)+(2*9)+(1*5)=119
119 % 10 = 9
So 6448-95-9 is a valid CAS Registry Number.
InChI:InChI=1/C24H18N4O4/c1-15-11-12-18(28(31)32)14-21(15)26-27-22-19-10-6-5-7-16(19)13-20(23(22)29)24(30)25-17-8-3-2-4-9-17/h2-14,29H,1H3,(H,25,30)
6448-95-9Relevant articles and documents
Synthesis and properties of azonaphtharylamide pigments having arylamide groups at 2- and 7-positions
Otani, Junji,Kikuchi, Takeshi,Higashida, Suguru,Harada, Takashi,Matsumura, Michio
, p. 28 - 35 (2015/02/19)
We studied two azonaphtharylamide pigments having arylamide groups at the 2- and 7-positions on the naphthol ring. Presence of the 7-substited amide group distinguishes the pigments from conventional azonaphtharylamide pigments derived from 3-hydroxy-2-naphthoic acid. The 7-substituent caused a hyperchromic effect but did not produce bathochromic shift in the optical absorption spectra in solution compared with the corresponding 7-unsubstituted counterparts. Molecular geometry optimizations through semi-empirical MO calculations showed that extent of the chromophore systems in the pigments with and without the 7-substituent is nearly the same, which is consistent with absence of the bathochromic shift. The MO calculations also showed that the MOs localized in the 7-substituents are involved in the electronic transitions in the longest wavelength bands of the pigments, which is responsible for the hyperchromic effect. The 7-substituted pigments exhibited better resistivity to light and heat than the 7-unsubstituted ones.
