Merit Clays F166
Merit Clays F166 is an acid-activated bleaching clay engineered for high-efficiency refining of edible oils. It is particularly effective for hard-to-bleach oils with a high content of carotenoids, chlorophyll, phospholipids, peroxides and trace metals.
Merit Clays F166
Merit Clays F166 is an acid-activated bleaching clay engineered for high-efficiency refining of edible oils. It is particularly effective for hard-to-bleach oils with a high content of carotenoids, chlorophyll, phospholipids, peroxides and trace metals.
The sulphate (rather than chloride) activation route keeps chlorides out of the process, reducing the risk of equipment corrosion and the formation of chlorinated by-products. An optimised chemical structure and a highly developed specific surface deliver excellent colour removal even under demanding processing conditions.
Key advantages
Effectively removes chlorophyll, carotenoids, phospholipids, peroxides and other colouring matter from oils with a high impurity load.
Increases adsorption capacity and specific surface area, improving oil purification performance.
Optimal for oils rich in trace metals and natural pigments: rapeseed, cottonseed and sunflower.
An optimised particle size distribution ensures high filtration speed and line throughput.
Applications
Edible oil refining — bleaching stage:
- Sunflower oil
- Rapeseed oil
- Cottonseed oil
- Other vegetable oils with a high content of pigments, phospholipids, peroxides and trace metals
Used both at the bleaching stage after neutralisation and in physical refining processes. The optimal dosage is selected individually — a laboratory jar-test is recommended.
Packaging Type
25 kg- Multi-wall paper bags (standard — 25 kg)
- Big bags (FIBC)
- Bulk delivery
Technical Data Sheet (TDS)
Key characteristics and composition based on the official technical data sheet.
Product identification
| Trade name | Merit Clays F166 |
| Chemical name | Bentonite, sulfuric acid activated |
| Synonym | Activated Bleaching Earth |
| CAS No. | 70131-50-9 |
| EINECS No. | 274-324-8 |
| Base raw material | Natural bentonite (smectite) |
| Activation method | Sulphate activation (sulfuric acid) |
| Appearance | Free-flowing powder |
| Odour | Odourless |
Technical characteristics
| Parameter | Unit | Value |
|---|---|---|
| Moisture (2 h, 105 °C) | % | ~ 10 |
| pH (10% suspension, filtrate) | — | 3 – 4 |
| Bulk density | g/l | 450 – 580 |
| Specific surface area | m²/g | 150 – 250 |
| Loss on ignition (2 h, 1000 °C) | % | 5 – 7 |
Particle size distribution
| Fraction | Unit | Value |
|---|---|---|
| ≤ 150 µm | % | 85 – 95 |
| ≤ 106 µm | % | 75 – 90 |
| ≤ 63 µm | % | 45 – 70 |
| ≤ 45 µm | % | 35 – 55 |
| ≤ 25 µm | % | 25 – 50 |
Chemical composition
| Component | Content, % (w/w) |
|---|---|
| Silicon dioxide (SiO₂) | 72 – 74 |
| Aluminium oxide (Al₂O₃) | 10 – 11 |
| Iron oxide (Fe₂O₃) | 2.7 – 2.9 |
| Calcium oxide (CaO) | 1.9 – 2.1 |
| Magnesium oxide (MgO) | 1.9 – 2.1 |
| Potassium oxide (K₂O) | 0.95 – 1.1 |
| Sodium oxide (Na₂O) | 0.7 – 0.8 |
| Loss on ignition | 5 – 7 |
Analysis method — ASTM. Values are given as % of dry mass; composition may vary depending on the clay source.
Physico-chemical properties
| Appearance | Free-flowing powder |
| Odour | Odourless |
| Bulk density | 450 – 580 kg/m³ |
| Solubility | Negligible in water, solvents and oil |
| Flammability | Non-flammable |
| Explosiveness | Non-explosive |
| Oxidising properties | None |
| Respirable crystalline silica | Absent |
Storage
- Store in a dry, ventilated area
- High humidity causes caking of the powder
- Keep away from toxic substances to avoid contamination
- Protect from moisture during transport
Oil Refining: Challenges and Solutions.
Crude Oil (Input)
Contains free fatty acids, phospholipids, waxes, peroxides, aldehydes, and pigments (chlorophyll, carotenoids).
Problem
These impurities cause undesirable color, unpleasant odor, reduced shelf life, and violation of food safety standards (FEDIOL).
Solution (Output)
Physicochemical adsorption — a process of targeted capture of impurities without changing the molecular structure of triglycerides themselves. Purity, stability, transparency.
Purification Efficiency
Multi-level filtration guarantees the removal of all unwanted impurities.