Understanding Syrian Phosphate Grades: G3, G4, G6 Explained

Syrian phosphate rock from the Khneifess deposit is among the most sought-after phosphate sources in the Mediterranean basin. The deposit yields three primary grades — G3, G4, and G6 — each with distinct specifications and optimal applications.

Grade Overview

G3 — Premium Grade (BPL 65–67)

G3 is the highest grade from the Khneifess deposit, combining excellent P₂O₅ concentration (29.75–30.66%) with a notably low cadmium profile (12–28 mg/kg P₂O₅). This makes it ideal for EU fertilizer producers who need to comply with the 2026 cadmium threshold of 40 mg/kg. G3 is typically used for direct application phosphate rock and high-grade phosphoric acid production.

G4 — Standard Industrial Grade (BPL 64–66)

G4 is the workhorse grade for phosphoric acid-based fertilizer production. With P₂O₅ of 29.29–30.21% and similarly low cadmium levels, it is fully compliant with current and upcoming EU regulations. G4 is the most traded Syrian phosphate grade and is available in volumes of 3,000–20,000 MT per shipment from Tartous.

G6 — Economic Grade (BPL 62–64)

G6 offers a cost-effective alternative for acid plants that can tolerate slightly lower P₂O₅ concentrations. Its cadmium profile (14–30 mg/kg) remains within EU limits, making it suitable for blending or for operations with higher tolerance specifications.

Key Takeaway

For EU buyers facing the 2026 cadmium phase-down, Syrian G3 and G4 grades offer a clear compliance advantage over North African alternatives with higher Cd profiles. The choice between G3, G4, and G6 ultimately depends on the buyer's specific P₂O₅ requirements, tolerance for Cd, and price sensitivity.