2814-77-9 Usage
Description
Pigment Red 4 is a red powder with a bluish shade, characterized by its heat resistance of at least 180°C, light fastness rating of 6, and good acid and alkali resistance with a rating of 5. It has a fastness to bleeding rating of 4 and an oil absorption rate of 40-45%. The specific surface area of Pigment Red 4 is 28 m2/g, and it has a density of 1.60 g/cm3. The pigment has a maximum water solubility of 1.0% and a maximum residue on an 80 mesh screen of 5.0%. It also has a tinting strength of 100-105%.
Uses
Used in Paint Industry:
Pigment Red 4 is used as a colorant for its excellent heat resistance, light fastness, and acid and alkali resistance properties. Its bluish shade and strong tinting strength make it suitable for creating vibrant red hues in various paint formulations.
Used in Plastics Industry:
In the plastics industry, Pigment Red 4 is utilized as an additive to impart a strong red color to plastic products. Its heat resistance and resistance to acids and alkalis make it an ideal choice for applications where the plastic products may be exposed to high temperatures or harsh chemical environments.
Used in Printing Industry:
Pigment Red 4 is employed as a pigment in the printing industry due to its high light fastness and resistance to bleeding. This ensures that the printed materials maintain their vibrant red color even when exposed to light and other environmental factors.
Used in Textile Industry:
In the textile industry, Pigment Red 4 is used as a dye to color fabrics. Its strong tinting strength and resistance to various conditions make it a popular choice for creating long-lasting, vibrant red colors in textiles.
Used in Cosmetics Industry:
Pigment Red 4 may also be used in the cosmetics industry as a color additive for products such as lipsticks and blushes. Its strong color and resistance to various conditions make it suitable for creating long-lasting, vibrant red shades in cosmetic products.
TEST ITEMS
SPECIFICATION
HEAT RESISTANCE
180 °C min
LIGHT FASTNESS
6
ACID RESISTANCE
5
ALKALI RESISTANCE
5
FASTNESS TO BLEEDING
4
OIL ABSORPTION
40-45%
SPECIFIC SURFACE
28 m
2
/g
DENSITY
1.60 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 2814-77-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,8,1 and 4 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 2814-77:
(6*2)+(5*8)+(4*1)+(3*4)+(2*7)+(1*7)=89
89 % 10 = 9
So 2814-77-9 is a valid CAS Registry Number.
InChI:InChI=1/C16H10ClN3O3/c17-13-9-11(20(22)23)6-7-14(13)18-19-16-12-4-2-1-3-10(12)5-8-15(16)21/h1-9,21H/b19-18+
2814-77-9Relevant 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.
Method for preparing azo compounds with narrow particle size distribution
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Paragraph 0028; 0029; 0030; 0031; 0032; 0033; 0034-0036, (2018/03/25)
The invention relates to a method for preparing azo compounds with narrow particle size distribution. The method mainly comprises the following steps: coating the surfaces of titanium dioxide particles with narrow particle size distribution, with a coupling component to obtain titanium dioxide particles with surfaces coated with the coupling component; performing a coupling reaction between the obtained titanium dioxide particles with surfaces coated with the coupling component and a diazonium salt component to obtain target objects. According to the method provided by the invention, azo compounds with narrow particle size distribution (especially azo compounds with D90 between 0.10mum and 0.15mum) can be prepared by a relatively simple method, and the problems (including complex and lengthy steps, expensive high-precision sanding machinery and the like) of the prior art are overcome.
