| Product name |
Pigment Black 28 |
| CAS No. |
68186-91-4 |
| Molecular Structure |
 |
| Uasage |
|
|
Chemical Name Copper Chromite Black Spinel
Color Index C I Pigment Black 28
C.I . No. 77428
Chemical Composition Cu/Cr/Fe Oxide
Model No. JF-B2851
Color Reference Mass Tone Tint Tone 1:4
Regulations
EU RoHS 2002/95/EC Compliant
EN71.3 EN71Part 3:1994 (A1:2000/AC2002) Compliant
US FDA 21 CFR 177.1520 Compliant
ASTM F963-08 (Clause 4.3.5) Compliant
Physical Properties
| Appearance |
Reddish Black powder |
| crystal form |
Spinel Pattern |
| Mean particle size μm |
0.58 |
| Moisture Content |
0.12% |
| Water soluble salt |
0.18% |
| Oil Absorption g/100g |
13.27 |
| PH Value |
6.5-7.0 |
Fastness Properties
| Heat resistance（°C） ≥ |
1000 |
| Light fastness (grade 1-8 ) |
8 |
| Weather fastness (grade 1-5 ) |
5 |
| Acid Resistance (grade 1-5) |
5 |
| Alkali Resistance (grade 1-5) |
5 |
|
.Remark: products patented are for R&D only and are permitted under 35 USC 271(e).
.Patent products cannot be offered to the countries where patent law is in force.
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