Introduction
Iron Oxide Red 130 is a synthetic ferric oxide pigment (α-Fe2O3), CAS 1309-37-1, C.I. Pigment Red 101 (77491). With Fe2O3 content ≥96% and tinting strength 97-103%, it provides stable red shade for fertilizer granulation and long-term storage.
It is chemically inert and does not react with potash, urea or phosphate fertilizer raw materials. It keeps color fastness under high-temperature granulation and drying processes, and is widely used for visual identification and brand differentiation of granular fertilizer products.

Technical Data
|
Contents(Fe2O3) |
% |
≥96 |
|
Oil Absorption |
ml/100g |
15-25 |
|
Res.on 325 mesh |
% |
≤0.3 |
|
Water soluble salts |
% |
≤0.3 |
|
Moisture |
% |
≤1.0 |
|
PH value |
|
3.5~7 |
|
Bulk Density |
g/cm³ |
0.7-1.1 |
|
Specific gravity |
g/cm³ |
5.0 |
|
Tinting Strength |
% |
97~103 |
|
Dispersibility(Hegman) |
μm |
20/25/30 |
|
Particle Size |
μm |
1.5 |
|
Color Difference △E |
|
≤1.0 |
Key Features
High Fe2O3 content (≥96%) and stable tinting strength (97-103%), ensuring consistent red shade batch-to-batch.
Chemically inert - no reaction with potash, urea and NPK fertilizer raw materials, will not affect nutrient performance.
Excellent thermal stability - keeps stable red color during high-temperature fertilizer granulation and drying.
Fine particle size (1.5 μm) and good dispersibility - mixes evenly in fertilizer raw materials.
REACH registered and non-hazardous - suitable for global fertilizer industry supply.
Applications
Canadian red potash / muriate of potash coloring
NPK compound fertilizer, granular urea color identification
Various granular chemical fertilizer visual marking and brand differentiation


Packaging & Loading
25kg paper bag, or 1000kg jumbo bag, then palletized
Store in dry place, protect against weathering
20GP container loading: about 24-25 tons
Inquiry Now
Send your inquiry today to lucy@desonpigment.com or WhatsApp +86 138 7312 1965.
We can provide TDS, MSDS and free sample for fertilizer-grade iron oxide red 130.
We will reply within 12 hours.
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