… Sulphur, sublimed or precipitated; colloidal sulphur. …
Explanatory notes
… 28.02 ‑ Sulphur, sublimed or precipitated; colloidal sulphur. (A) SUBLIMED OR PRECIPITATED SULPHUR The … slow distillation of crude or impure sulphur, followed by condensation in the solid form (or sublimation) as fine, … The precipitated sulphur of this heading must not be confused with certain “recovered” (triturated or micronised) …