General Description
Colour: Grey-white granular material
Grading: 10mm to 30mm
Packaging: Bulk material
Hazchem: Inert
Chemical Identification
Rob5 Milling Pty Ltd produces a mixture of potassium feldspar and sodium feldspar. The chemical names are potassium aluminum silicate and sodium aluminum silicate.
Formula:
Potassium Feldspar – K2O.Al2O3.6SiO2
Sodium Feldspar – Na2O.Al2O3.6SiO
Average Chemical Analysis
| Content of Feldspar | % of Content |
| SiO2 | 65% – 70% |
| Al2O3 | 16% (+/- 2%) |
| K2O + Na2O | >11% |
| K2O | 2% – 13% |
| Na2O | 2% – 13% |
| CaO | <1% |
| TiO2 | <0.2% |
| MgO | <0.1% |
| S | <0.1% |
| MnO | <0.1% |
| V2O5 | <0.1% |
| Fe2O3 | 0.05% – 0.2% |
Hazard Identification
SAPMA health rating: 3-slight. Irritation or minor reversible injury possible
Inhalation: Excessive dust exposure can cause lung damage
Skin: No direct hazard expected but exercise caution
Eyes: Particles may scratch eye or cause mechanical caution
Ingestion: No direct hazard expected but exercise caution
No carcinogenic, mutagenic nor genetic effects established.
Not considered dangerous to the environment
First Aid Measures
Skin contact absorption: Inflammation from contact with open cuts may occur. Wash thoroughly with water.
Inhalation:
Short term: Shortness of breath, coughing associated with inhalation of dust.
Long term: May cause silicosis, a chronic disease of the lungs marked by acute fibrosis; may cause cancer. If inhalation occurs move to fresh air, obtain competent medical assistance as necessary.
Eye contact: Wash eyes with large amount of water or saline solution. If irritation or redness develops, get medical attention.
Ingestion: Consult physician and/or obtain competent medical assistance
Firefighting Measures
Feldspar is not flammable.
Accident Release Measures
Feldspar is an inert substance, sweep up, contain and collect
Handling and Storage
Inert substance, no special requirements for hazard containment
Avoid dust formation.
Exposure Control / Personal Protection
OEL: N/E
SAPMA rating: 3-H-D
PPE: Dust mask and eye protection
Inhalation: Avoid excessive dust inhalation, use a dust mask (FFP2)
Skin: Wash before eating drinking or smoking
Eyes: Avoid contact with dirty hands or gloves, use goggles
Ingestion: Wash before eating, drinking smoking
Inert, non-toxic and non-allergenic. As with most base minerals a free silica content does exist. Thus ensure good ventilation and respiratory protection should be used.
Appropriate hand protection and protective clothing must always be used
Physical and Chemical Properties
| Melting point | 1100-1450 °C | Specific gravity (water=1): | 2.60-2.65 |
| Solubility in water | Negligible | % Volatile by Vol. | Non-Volatile |
| Boiling point | N/A | Appearance | White to tan granules and/or powder |
| Odour | Earthy smell when wet | Vapour pressure | N/A |
Stability and Reactivity
Generally inert, non-volatile and with an indefinite shelf life
Resistant to mild acids, alkalis and organic solvents
Toxicological Information
No carcinogenic, mutagenic nor genetic effects established
Potential health effects (acute & chronic): May cause eye and skin irritation. Ingestion may cause gastrointestinal irritation, nausea and diarrhoea. Long term exposure to high amount of feldspar without the approved dust mask may cause chronic cough, silicosis and cancer.
Ecological Information
Not considered dangerous to the environment
Disposal Considerations
Minimal hazard with no problems contemplated in disposal