Rare earth oxides beyond yttrium, plus the salt forms used as precursors. These items do not share a specification logic — polishing-grade ceria is defined by its particle-size cut, optical-glass lanthana by purity, the salts by which anion your synthesis route needs. They share one procedural fact: China's export controls apply element by element and the list has moved several times since 2023, so we determine export-control applicability per item, against the current list, before replying — the answer arrives with the quotation, not after the order. The chronology is in our export-controls timeline; structuring procurement around a licensing regime is in the procurement-strategy guide.
Products
| SKU | Product | Typical | Application |
|---|---|---|---|
| NTS-RE-CE | Cerium oxide CeO₂ | 3N–4N; polishing grade D50 0.5–2 µm, catalyst grade agreed per order | Glass and wafer polishing, catalysts |
| NTS-RE-LA | Lanthanum oxide La₂O₃ | 3N–4N | Optical glass, catalysts |
| NTS-RE-ND | Neodymium oxide Nd₂O₃ | 3N–4N | Magnet material feedstock, glass colouring |
| NTS-RE-ER | Erbium oxide Er₂O₃ | 3N–4N | Optical fibre doping, glass colouring |
| NTS-RE-SALT | Salts — carbonates, chlorides, nitrates | Agreed per item | Precursors, catalyst synthesis |
NTS-RE-CE — cerium oxide
3N–4N CeO₂ in two forms: a polishing grade cut to D50 0.5–2 µm, where the distribution is the working specification — it sets removal rate and scratch behaviour and is the number to read first on the COA — and a catalyst grade agreed per order against your surface-area and impurity requirements.
NTS-RE-LA — lanthanum oxide
3N–4N La₂O₃ for optical glass and catalyst formulation. For optical work the impurity profile — colouring transition metals in particular — matters more than headline purity, so state the impurities your recipe limits and we confirm against the lot COA.
NTS-RE-ND — neodymium oxide
3N–4N Nd₂O₃ as feedstock for magnet materials and as a glass colourant. Supplied as oxide powder; alloy and downstream magnet processing are outside our scope.
NTS-RE-ER — erbium oxide
3N–4N Er₂O₃ for optical-fibre doping and glass colouring. Fibre-doping work usually carries the tightest impurity limits in this line; send the specification and we reply on which limits the available material meets.
NTS-RE-SALT — carbonates, chlorides, nitrates
Salt forms for buyers whose process starts from a solution or precursor rather than a fired oxide. Element, anion, concentration or assay basis, and packing are agreed per item — a nitrate for sol-gel and a carbonate for calcination feed are different enquiries even for the same element.