Dense Soda Ash Na2CO3
Dense soda ash — also called heavy soda ash or soda ash dense; sodium carbonate (Na₂CO₃) — for glass batches. Natural alkali from the Alxa Yingen plant. Parameters below are GB/T 210-2022 Class II superior (优等品) limits from the plant COA, not a lot actual. Industrial grade only — we do not list a food-grade soda ash SKU. FOB Tianjin.
For: Glass plants, chemical distributors
Specification
| Appearance | White crystalline powder / fine granules |
| Total alkali (Na₂CO₃, dry basis) | ≥ 99.2% |
| Total alkali (Na₂CO₃, wet basis) | ≥ 97.9% |
| Sodium chloride (NaCl, dry basis) | ≤ 0.70% |
| Iron (Fe, dry basis) | ≤ 0.0035% |
| Water insolubles | ≤ 0.03% |
| Bulk density | ≥ 0.90 g/mL |
| Particle size (180 μm residue) | ≥ 70.0% |
| Production method | Natural soda process |
| Standard | GB/T 210-2022 Class II superior (优等品) |
Packing & trade terms
| Packing | 50 kg woven bag (PE lined) · 1,000 kg jumbo bag (ton bag). No 25 kg packing on this grade. |
| Container load | 25–27 MT / 20′ FCL |
| Minimum order | 10 MT; full-container programs preferred |
| Incoterms / ports | FOB · CIF · CFR · Tianjin Xingang · Caofeidian |
| Lead time | 10–15 days after deposit |
| Shelf life | Stable in dry storage |
| Documents | Plant batch COA · MSDS · CO / Form E |
Soda ash for glass
Stable bulk density and low iron for container, float and solar glass batches. Less dusting in batch handling than light soda ash.
A standard industrial sodium carbonate grade for buyers who specify dense / heavy soda ash on the PO.
Documents
The files below are the current plant sheets we send with a quote. The lot COA is issued by the producing plant and travels with the shipment. Yizhou Chem is the exporter, not the issuing lab.
What buyers ask us about dense.
Is dense soda ash the same as heavy soda ash?
Yes. Dense soda ash and heavy soda ash are the same industrial sodium carbonate grade — higher bulk density than light soda ash, used mainly in glass.
What is the difference between dense and light soda ash?
Dense (heavy) soda ash is specified at bulk density ≥ 0.90 g/mL and particle size (180 μm residue) ≥ 70%, and is the usual choice for glass batches. Light soda ash is the low-density grade for detergent, textile and water treatment; its plant COA does not list a bulk-density limit. Send the spec you are replacing and we match the grade.
Is this food-grade soda ash?
No. This page is industrial dense soda ash. We do not list a food-grade soda ash SKU. The table is the GB/T 210-2022 Class II superior (优等品) limit from the plant COA; the lot COA is the contractual document.
How do you quote soda ash price per ton FOB?
We quote FOB Tianjin (Xingang or Caofeidian) against grade, packing, quantity and month of loading. There is no list price on this site. Send the inquiry form and we reply within 24 hours (GMT+8, Mon–Sat).
What iron level do you quote for glass?
The plant COA limit is Fe (dry basis) ≤ 0.0035%. Tighter iron for low-iron glass is quoted against the lot — send your target.
What marks are on the bags?
Malan is a producing-plant brand that may appear on bag markings. Current soda ash plant COAs also show the Zhongtian (中天) mark. Yizhou Chem is the exporter, not the brand owner. We confirm the mark on the current lot before loading.
What is the MOQ?
10 MT. Full-container programs are preferred. Mixed-grade loading in one FCL is routine when each grade keeps its own batch numbers, bag markings and COA.
Is there a trade investigation affecting soda ash imports into India?
India’s DGTR initiated a safeguard investigation into soda ash imports in March 2026 (notified to the WTO in April 2026), separate from the existing minimum import price and the BIS Quality Control Order (IS 251). If you import into India, ask us for the current status before you lock a shipment schedule.
Other soda ash grades
Same family only — food, feed and industrial bicarbonate stay on their own pages; dense and light soda ash stay on theirs.
Ask about dense soda ash — quote within 24 hours.
Include destination port, packing and quantity (MT). Samples with matching plant COA are couriered before any first order. MOQ 10 MT.
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