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Send EmailQuartz, Silicon Dioxide, 14808-60-7
| Parameter | Description |
|---|---|
| Product Name | Quartz (Silicon Dioxide) |
| Chemical Formula | SiO₂ |
| Molecular Weight | 60.1 g/mol |
| Hardness (Mohs) | 7 |
| Specific Gravity | 2.65 g/cm³ |
| Crystal System | Hexagonal |
| Appearance | Crystalline or amorphous form |
| CAS Number | 14808-60-7 |
| EC Number | 238-878-4 |
| Packaging | 1000 kg Big Bag |
CHEMICAL DESCRIPTION:
Quartz is the most common crystalline form of silicon dioxide (SiO₂). It is one of the most abundant minerals in the Earth's crust and crystallizes in the hexagonal crystal system. It has a Mohs hardness of 7 and a specific gravity of 2.65 g/cm³. It is used as a fundamental raw material in the ceramic, glass, frit, and glaze industries. It can be found in crystalline or amorphous forms. The micronized form (63 µm) is used in glaze formulations, while the run-of-mine (unmilled) form is used in body (masse) recipes.
| Stage | Description |
|---|---|
| 1. Quarry | Found in nature in crystalline or amorphous form |
| 2. Crushing | Primary and secondary crushing processes |
| 3. Grinding | Micronized production: 63 µm |
| 4. Classification | Classification according to desired particle size |
| 5. Purification | Reduction of FeO and TiO₂ impurities |
| 6. Packaging | 1000 kg Big Bag |
Special Note: Highly pure silicon dioxide crystals are preferred for Tecnodieci production.
| Property | Value |
|---|---|
| Appearance | Crystalline or amorphous |
| Hardness (Mohs) | 7 |
| Specific Gravity | 2.65 g/cm³ |
| Molecular Weight | 60.1 g/mol |
| Crystal System | Hexagonal |
| Melting Point | ~1,713 °C |
| Boiling Point | ~2,950 °C |
| Refractive Index | 1.544 – 1.553 |
| Particle Size | 63 µm (micronized) / Run-of-mine |
| Component | Formula | Typical Ratio (%) |
|---|---|---|
| Silicon Dioxide | SiO₂ | ≥ 99.0 – 99.8 |
| Iron Oxide | Fe₂O₃ | < 0.02 – 0.05 |
| Titanium Dioxide | TiO₂ | < 0.01 – 0.03 |
| Aluminum Oxide | Al₂O₃ | < 0.1 |
| Calcium Oxide | CaO | < 0.05 |
| Magnesium Oxide | MgO | < 0.05 |
| Sodium Oxide | Na₂O | < 0.05 |
| Potassium Oxide | K₂O | < 0.05 |
Impurity Note: Low FeO and TiO₂ content determines quality.
| Property | Description |
|---|---|
| Glaze Composition | Used together with feldspathic sand, feldspar, and kaolin |
| Excessive Silica | Creates matteness in the glaze |
| Insufficient Silica | Causes pinholes (boiling) |
| Low-Temperature Glazes | SiO₂ : Flux oxide ratio → 2:1 (mol) |
| High-Temperature Glazes | SiO₂ : Flux oxide ratio → 10:1 (mol) |
| Thermal Expansion | As quartz content increases, glaze expansion coefficient decreases |
| Melting Behavior | Increases glaze melting temperature |
| Glaze Type | SiO₂ : Flux Oxide Ratio (mol) | Description |
|---|---|---|
| Low-Temperature Glazes | 2 : 1 | Low melting temperature, glossy surface |
| Medium-Temperature Glazes | 4 : 1 – 6 : 1 | Balanced properties |
| High-Temperature Glazes | 10 : 1 | High durability, matte appearance |
| Sector | Application |
|---|---|
| Ceramic Glazes | Micronized (63 µm) in glaze formulations |
| Ceramic Bodies | Run-of-mine in body (masse) recipes |
| Glass Production | Fundamental raw material |
| Frit Production | Frit formulations |
| Porcelain | Porcelain manufacturing |
| Refractories | High-temperature refractory materials |
| Sandblasting | Abrasive material |
| Property | Micronized Quartz (63 µm) | Run-of-Mine Quartz |
|---|---|---|
| Particle Size | 63 µm | Variable |
| Application | Glaze formulations | Body (masse) recipes |
| Processing | Ground | Unmilled / coarse |
| Purity | Generally higher | Variable |
| Cost | Higher | Lower |
| Parameter | Information |
|---|---|
| Storage Conditions | Dry, enclosed area; protect from moisture |
| Storage Temperature | Room temperature |
| Keep Away From | Moisture, acids, hydrofluoric acid (HF) |
| Shelf Life | Unlimited (under proper storage) |
| Packaging | 1000 kg Big Bag |
| Handling Notes | Avoid dust formation; avoid eye and respiratory contact |
Personal Protective Equipment:
Dust mask (P2 or N95)
Safety goggles
Protective gloves
Protective clothing
| Parameter | Value |
|---|---|
| GHS Classification | Not classified (not hazardous) |
| Toxicity | Low |
| Dust Inhalation | Dust inhalation may cause respiratory tract irritation |
| Skin Contact | May cause mild irritation |
| Eye Contact | May cause mild irritation |
| Carcinogenicity | Not classified (crystalline silica dust poses risk with prolonged exposure) |
| Ecotoxicity | Low |
| Special Risk | Prolonged inhalation of crystalline silica dust carries silicosis risk |
SPECIAL WARNINGS:
Prolonged inhalation of crystalline silica dust carries silicosis risk
Appropriate dust control measures should be taken
Use of dust mask is mandatory
Avoid contact with hydrofluoric acid (HF)
| Parameter | Information |
|---|---|
| Ecotoxicity | Low |
| Bioaccumulation | Not expected |
| Environmental Impact | Low |
| Waste Management | Disposal according to local regulations |
| Recycling | Possible |
| Parameter | Information |
|---|---|
| UN Number | Not classified as dangerous for transport |
| Hazard Class | Not classified |
| Packing Group | Not applicable |
| Proper Shipping Name | Quartz (Silicon Dioxide) |
| Marine Pollutant | No |
| ADR/RID Label | None |
SUMMARY:
Quartz (SiO₂) is the most common crystalline form of silicon dioxide. It has a Mohs hardness of 7, specific gravity of 2.65 g/cm³, and molecular weight of 60.1 g/mol. It crystallizes in the hexagonal crystal system. It is used as a fundamental raw material in the ceramic, glass, frit, and glaze industries. The micronized form (63 µm) is used in glaze formulations, while the run-of-mine form is used in body recipes.
Key Properties:
| Property | Value |
|---|---|
| Formula | SiO₂ |
| CAS No | 14808-60-7 |
| Molecular Weight | 60.1 g/mol |
| Hardness (Mohs) | 7 |
| Specific Gravity | 2.65 g/cm³ |
| Crystal System | Hexagonal |
| Melting Point | ~1,713 °C |
| Packaging | 1000 kg Big Bag |
CRITICAL WARNINGS:
Glaze Composition: Quartz is used together with feldspathic sand, feldspar, and kaolin in glaze compositions. Ratios vary according to glaze type.
SiO₂ Ratio: Low-temperature glazes have a SiO₂ : flux oxide ratio of 2:1 (mol), while high-temperature glazes have 10:1 (mol).
Excessive/Insufficient Silica: Excessive use creates matteness; insufficient use causes pinholes (boiling).
Thermal Expansion: As quartz content increases, the glaze expansion coefficient decreases.
Silicosis Risk: Prolonged inhalation of crystalline silica dust carries silicosis risk. Appropriate dust control measures and respiratory protection are mandatory.
Purity: Low FeO and TiO₂ content determines quality. High purity is critical for Tecnodieci and optical applications.
Hydrofluoric Acid: Quartz is resistant to all acids except hydrofluoric acid (HF). Avoid contact with HF.
Important Disclaimer: This Technical Data Sheet (TDS) is for informational purposes only. The information provided is based on available data and is believed to be accurate. However, the user is solely responsible for determining the suitability of the product for their specific applications and for complying with all applicable regulations and safety requirements. For complete safety, handling, storage, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. All local, national, and international regulations must be followed when working with Quartz. Due to the risk of exposure to crystalline silica dust, appropriate occupational health and safety measures must be taken.