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Posted by Admin on April, 23, 2026

Sodium Feldspar (Albite, NaAlSi₃O₈) — also known as Soda Feldspar or Na-Feldspar — is the essential ceramic flux that drives vitrification, glaze fusion, and glass phase development in tile bodies, porcelain, sanitaryware casting slips, and ceramic glazes. With Na₂O 9–11%, it melts at lower temperatures than potash feldspar (~1050°C onset vs ~1150°C), making it the preferred choice for energy-saving fast-fire wall tile production and transparent glaze formulations worldwide.
Aalok Overseas manufactures and exports high-whiteness sodium feldspar powder in 200 Mesh and 325 Mesh from the finest albite-rich ore deposits of Rajasthan and Gujarat, India. Our ceramic-grade soda feldspar consistently achieves Na₂O 9–11%, Fe₂O₃ below 0.10%, and Hunter Lab whiteness 82–89% — verified by NABL-accredited XRF analysis and laser PSD on every commercial lot.
We supply in 25 kg bags, 50 kg bags, and 1000 kg FIBC jumbo bags and can quote FOB Mundra, FOB Nhava Sheva, CFR Jebel Ali, CFR Dammam, CFR Port Klang, CFR Colombo, CFR Karachi, CFR Chittagong, CFR HCMC and all major regional ports — making us the most convenient supplier for tile factories across GCC, South Asia, and Southeast Asia.
| Parameter | Value / Detail | Significance for Buyers |
|---|---|---|
| Product Names | Sodium Feldspar · Soda Feldspar · Albite · Na-Feldspar · Soda Spar · Albite Powder | All these names refer to the same product in international trade |
| Chemical Formula | NaAlSi₃O₈ | Sodium aluminium trisilicate — the albite end member of plagioclase series |
| CAS Number (Albite) | 12244-10-9 | Specific CAS for albite mineral — used in MSDS Section 3 & customs declarations |
| CAS Number (Natural Feldspar) | 68476-25-5 | Broader CAS for all natural feldspars — primary identifier on MSDS/SDS |
| EC / EINECS Number | 235-468-8 | EU EINECS identifier — mandatory for REACH SDS compliance |
| REACH Registration No. | 01-2119455851-35 | EU REACH registered — mandatory for export to European Union buyers |
| HS Code | 2529.10.00 | Harmonised System code for all natural feldspars — globally uniform |
| Available Mesh Sizes | 200 Mesh (D50 ~45–55µm) · 325 Mesh (D50 ~20–30µm) | Industry-standard ceramic sizes — 200M for tile body; 325M for body & glaze |
| Crystal System | Triclinic — plagioclase feldspar series | Distinguishes albite (Na) from orthoclase (K-feldspar, monoclinic) |
| Mohs Hardness | 6.0 – 6.5 | Adequate for ceramic body hardness and grinding mill compatibility |
| Melting Range | 1050°C – 1150°C | Lowest of all ceramic feldspars — enables fast-fire, lower-temp, energy-saving kiln cycles |
| GHS / MSDS Note | ⚠ Contains Respirable Crystalline Silica (RCS) — IARC Group 1 — declared CAS 14808-60-7 in SDS Section 3. Full GHS MSDS provided. | Required for customs clearance in EU, USA, GCC, ASEAN, UK, Australia |
| Oxide / Parameter | CAS No. | Ultra-White Grade | Premium Grade | Standard Grade | Role in Ceramics |
|---|---|---|---|---|---|
| SiO₂ | 14808-60-7 | 65–68% | 66–69% | 65–70% | Glass network former — controls viscosity, thermal expansion & strength |
| Al₂O₃ | 1344-28-1 | 19–21% | 18–21% | 17–20% | Refractory strength, hardness & thermal resistance of fired body |
| Na₂O ⭐ KEY | 1313-59-3 | 9.5–11% | 9–11% | 8.5–10% | ⭐ PRIMARY FLUX — controls melting point, glass phase formation & glaze fluidity |
| K₂O | 12136-45-7 | <1.5% | <2.0% | <2.5% | Low K₂O confirms true albite composition — not a mixed feldspar |
| Fe₂O₃ ⭐ | 1309-37-1 | <0.06% | <0.08% | <0.12% | ⭐ Controls fired colour — Fe₂O₃ above 0.15% causes visible yellowing in white tile |
| TiO₂ | 13463-67-7 | <0.015% | <0.025% | <0.035% | Causes cream/ivory tint in fired body — ultra-low for premium white tiles |
| CaO | 1305-78-8 | <1.0% | <1.5% | <2.0% | Check carefully — above 2% CaO risks lime pitting in ceramic body |
| MgO | 1309-48-4 | <0.10% | <0.15% | <0.20% | Minor — low levels preferred for body consistency |
| LOI | — | <0.4% | <0.5% | <0.6% | High LOI causes kiln gas, blistering & glaze crawling — must be low |
| Whiteness (Hunter Lab) ⭐ | — | 86–89% | 83–87% | 80–84% | R457 standard — predicts fired body brightness in white tile production |
| Moisture | — | <0.3% | <0.5% | <0.8% | Low moisture — free-flowing; stable body water content in ceramic processing |
| D50 — 200 Mesh | — | 45–55 µm (all grades) | Standard tile body grade — consistent reactivity at 1050–1150°C firing | ||
| D50 — 325 Mesh | — | 20–30 µm (all grades) | Fine grade — faster flux action; preferred for glazes & premium porcelain | ||
Heavy-duty HDPE woven bag with PE inner liner. Moisture-proof. Palletised & shrink-wrapped. Standard for small to medium tile factories and distributors.
PP woven bag with PE liner. Most widely used packing for ceramic raw materials in GCC, Pakistan, Bangladesh & Sri Lanka. Cost-efficient, easy to handle.
FIBC with liner. Popular with large tile factories in SE Asia. Crane or forklift loading directly into silo. Reduces labour handling cost significantly vs small bags.
1MT FIBC — most cost-effective for large tile factories with silo storage. Minimum handling. Continuous supply contracts. Preferred by industrial buyers.
| Region | Country | Destination Port | Shipping Terms | Transit Time |
|---|---|---|---|---|
| 🇦🇪 GCC | UAE | Jebel Ali (Dubai) | FOB Mundra / CFR Jebel Ali | 6–9 days |
| 🇸🇦 GCC | Saudi Arabia | Dammam / Jeddah | CFR Dammam / CFR Jeddah | 8–12 days |
| 🇶🇦 GCC | Qatar | Hamad Port / Doha | CFR Hamad Port | 7–10 days |
| 🇰🇼 GCC | Kuwait | Shuaiba / Shuwaikh | CFR Kuwait | 9–12 days |
| 🇴🇲 GCC | Oman | Sohar / Muscat | CFR Sohar | 5–8 days |
| 🇧🇭 GCC | Bahrain | Khalifa Bin Salman | CFR Bahrain | 8–11 days |
| 🇵🇰 South Asia | Pakistan | Karachi / Port Qasim | FOB Mundra / CFR Karachi | 3–5 days |
| 🇧🇩 South Asia | Bangladesh | Chittagong | CFR Chittagong | 7–10 days |
| 🇱🇰 South Asia | Sri Lanka | Colombo | CFR Colombo | 4–6 days |
| 🇲🇾 SE Asia | Malaysia | Port Klang / Penang | CFR Port Klang (AIFTA) | 12–15 days |
| 🇮🇩 SE Asia | Indonesia | Tanjung Priok / Surabaya | CFR Tanjung Priok (AIFTA) | 12–16 days |
| 🇻🇳 SE Asia | Vietnam | Ho Chi Minh City / Hai Phong | CFR HCMC (AIFTA) | 14–18 days |
| 🇹🇭 SE Asia | Thailand | Laem Chabang / Bangkok | CFR Laem Chabang (AIFTA) | 13–17 days |
| 🇵🇭 SE Asia | Philippines | Manila / Batangas | CFR Manila (AIFTA) | 15–20 days |
| 🌍 East Africa | Kenya · Tanzania · Ethiopia | Mombasa / Dar es Salaam | CFR Mombasa | 12–18 days |
Soda feldspar is the preferred flux for fast-fire single-cycle wall tile. Its lower melting onset (~1050°C) versus potash feldspar (~1150°C) enables faster firing cycles, reduced kiln dwell time, and significant energy savings. This makes it the economic choice for the GCC, Southeast Asian, and South Asian tile markets where energy cost is a major production variable.
Soda feldspar is the standard flux in transparent, satin, and semi-gloss glaze formulations due to its lower melt viscosity versus potash feldspar. Its fluid melt produces self-levelling, pinhole-free glaze surfaces. At 325M, it dissolves rapidly into the glaze melt at 1050–1150°C — producing the crystal-clear, defect-free transparent glaze layer that premium tile buyers demand.
In porcelain stoneware body formulations, soda feldspar (typically 30–40% of recipe) works alongside potash feldspar and quartz to develop the glass phase that achieves water absorption below 0.5% at 1180–1220°C. 325M sodium feldspar provides better glass phase distribution and faster densification than coarser material at the same temperature.
Vitreous china sanitaryware casting bodies (WC pans, washbasins) contain 20–35% feldspar total. A blend of soda and potash feldspar is common — the soda feldspar lowers the overall firing temperature and improves fluidity of the glass phase, while potash feldspar provides viscosity control. 325M mesh ensures uniform distribution in the casting slip.
In glass batch formulations, albite/soda feldspar simultaneously provides Al₂O₃ (improves chemical durability) and Na₂O (partial replacement for soda ash — cost saving) — making it more economical than adding these oxides separately. Used in container glass, float glass, and fibreglass manufacturing.
Soda feldspar powder (200M–325M) is a functional extender in architectural paints, anti-corrosion primers, wall putty, and industrial coatings. Mohs 6–6.5 hardness adds scrub resistance and exterior durability. Chemical inertness ensures compatibility with all binder systems. Competitive pricing vs calcium carbonate with superior hardness.
| Application | Mesh | Grade | Min Na₂O | Max Fe₂O₃ | Min Whiteness |
|---|---|---|---|---|---|
| Fast-Fire Wall Tile (Monocottura) | 200M | Standard / Premium | 9.0% | 0.12% | 80% |
| Premium White Wall Tile | 325M | Premium | 9.5% | 0.08% | 84% |
| Porcelain Stoneware Floor Tile | 325M | Premium | 9.5% | 0.08% | 84% |
| Transparent Glaze (Tile / Ceramic) | 325M | Ultra-White | 10.0% | 0.06% | 86% |
| Sanitaryware Casting Body | 325M | Premium | 9.0% | 0.08% | 83% |
| Glass Batch | 200M | Standard | 9.0% | 0.08% | 78% |
| Paints & Wall Putty | 200M–325M | Standard | 8.5% | 0.15% | 76% |
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