3520-72-7 Usage
Description
Pigment Orange 13 is an orange powder with a reddish shade, characterized by its heat resistance of at least 180°C, light fastness of 6-7, and a tinging strength of 100-105%. It has a specific surface of 27 m2/g and a density of 1.50 g/cm3. The pigment has a water solubility of 1.0% max and a residue on 80 mesh of 5.0% max. It also has a volatite of 1.0% max at 105 °C.
Uses
Used in Textile Industry:
Pigment Orange 13 is used as a dye for coloring textiles, providing a reddish shade to the fabric. Its heat resistance and light fastness make it suitable for use in the textile industry.
Used in Commercial Industries:
Pigment Orange 13 is also used in commercial industries for various applications, such as coloring products or creating designs.
Used in Preparation of Light-Protective Containers:
Pigment Orange 13 is utilized in the preparation of light-protective containers, where its reddish shade and properties contribute to the effectiveness of the containers in protecting their contents from light damage.
TEST ITEMS
SPECIFICATION
HEAT RESISTANCE
180 °C min
LIGHT FASTNESS
6-7
ACID RESISTANCE
5
ALKALI RESISTANCE
4
FASTNESS TO BLEEDING
5
OIL ABSORPTION
35-50%
SPECIFIC SURFACE
27 m
2
/g
DENSITY
1.50 g/cm
3
RESIDUE ON 80 MESH
5.0% max
VOLATITE 105 °C
1.0% max
Check Digit Verification of cas no
The CAS Registry Mumber 3520-72-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,2 and 0 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 3520-72:
(6*3)+(5*5)+(4*2)+(3*0)+(2*7)+(1*2)=67
67 % 10 = 7
So 3520-72-7 is a valid CAS Registry Number.
InChI:InChI=1/C32H24Cl2N8O2/c1-19-29(31(43)41(39-19)23-9-5-3-6-10-23)37-35-27-15-13-21(17-25(27)33)22-14-16-28(26(34)18-22)36-38-30-20(2)40-42(32(30)44)24-11-7-4-8-12-24/h3-18,29-30H,1-2H3/b37-35+,38-36+
3520-72-7Relevant articles and documents
A quantitative one-pot synthesis method for industrial azo pigments with recyclable wastewater
Feng, Guangyuan,Zhu, Meiling,Liu, Lei,Li, Chunbao
supporting information, p. 1769 - 1776 (2019/04/08)
Most industrial azo pigments are synthesized by diazotization in one pot and then coupling in another. This two-pot process has been transformed into a one-pot method by adding granular PTFE (polytetrafluoroethylene) to a mechanically agitated aqueous mixture of NaNO2, HCl, a diazo component and a coupling component. This method avoids the step of using a base or a surfactant to dissolve the coupling component. The reactions were fast and quantitative. The granular PTFE, wastewater and excess HCl were then reused 11 times without deteriorating the reaction rate and product purity. Altogether, 22 industrial pigments and 3 azo compounds were synthesized and the reaction can produce up to 22.7 g of product in the laboratory. Some reactions require less than 2 equiv. of HCl and a mechanism explaining this is proposed. In addition, an o-nitro group effect is advanced to explain the differences in coupling reaction rates for o-, m- and p-nitroaniline.