2425-85-6 Usage
General Description
Yellowish-red to red powder or solid.
Air & Water Reactions
Sensitive to moisture Dust suspensions in air can be explosive at certain concentrations. Insoluble in water.
Reactivity Profile
Pigment Red 3 may form toxic gases with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. May form flammable gases with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.
Fire Hazard
Flash point data for Pigment Red 3 are not available; however, Pigment Red 3 is probably combustible.
Flammability and Explosibility
Nonflammable
Properties and Applications
TEST ITEMS
SPECIFICATION
APPEARANCE
DARK RED POWDER
SHADE
BLUISH
HEAT RESISTANCE
140 °C min
LIGHT FASTNESS
7
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
WATER SOLUBLE
1.0% max
VOLATITE 105 °C
1.0% max
TINTING STRENGTH
100-105 %
TEST ITEMS
SPECIFICATION
APPEARANCE
DARK RED POWDER
SHADE
BLUISH
HEAT RESISTANCE
140 °C min
LIGHT FASTNESS
7
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
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 2425-85-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,4,2 and 5 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 2425-85:
(6*2)+(5*4)+(4*2)+(3*5)+(2*8)+(1*5)=76
76 % 10 = 6
So 2425-85-6 is a valid CAS Registry Number.
InChI:InChI=1/C17H13N3O3/c1-11-6-8-14(15(10-11)20(22)23)18-19-17-13-5-3-2-4-12(13)7-9-16(17)21/h2-10,18H,1H3/b19-17-
2425-85-6Relevant articles and documents
Method used for synthesizing azo compound using solid particle one kettle method
-
Paragraph 0054; 0059; 0062; 0063; 0064; 0065, (2019/01/07)
The invention relates to a method used for synthesizing an azo compound using solid particle one kettle method. The method comprises following steps: solid particles are introduced into a reaction container, an inorganic acid, an aromatic primary amine, sodium nitrite, water, and a coupling component are added, mechanism stirring is carried out, when the reaction is monitored to be finished, filtering and rinsing are carried out, and the obtained filter cake is a finished product; or the solid particles are introduced into the reaction container, the inorganic acid, the aromatic primary amine,sodium nitrite, and water are added, mechanical stirring is carried out, after complete conversion of the aromatic primary amine, the coupling component is added, mechanical stirring is carried out,when the reaction is monitored to be finished, filtering and rinsing are carried out, and the obtained filter cake is a finished product. The solid particles are preferably selected from polytetrafluoroethylene particles, haw seeds, or stainless steel sand. The solid particles are added into the reaction system to promote reaction, no pre-heating or alkali adding dissolving of diazo components orthe coupling component is needed; most reaction is finished in 1h; reaction time is short; product quality is high; and reaction filtrate and excess inorganic acid can be recycled for a plurality of times.
