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Refractory Raw MaterialsSilicon carbide and chromium raw materials

Refractory Chromium Powder (RSR)

Refractory chromium powder (RSR) is chrome oxide green, Cr₂O₃, supplied as a refractory raw material in three specifications, RSR-1, RSR-2 and RSR-3, according to the data below.

Name: Chrome Oxide Green
Formula: Cr₂O₃
EINECS No.: 215-160-9
CAS No.: 1380-38-9
Color: Bright green to dark green
Grades / types: RSR-1, RSR-2, RSR-3

Product overview

Refractory chromium powder (RSR) is chrome oxide green, Cr₂O₃ (EINECS No. 215-160-9, CAS No. 1380-38-9), bright green to dark green in colour, supplied as a refractory raw material in the specifications RSR-1, RSR-2 and RSR-3. The catalogue states Cr₂O₃, Fe₂O₃, SiO₂, moisture, water-soluble content, residue on sieve, D50, natural stockpile density and Cr(VI) for each specification.

Technical data

Specification
Property	Unit	RSR-1	RSR-2	RSR-3
Cr₂O₃		≥99%	≥99.2%	≥99%
Fe₂O₃		≤0.2%	≤0.2%	≤0.2%
SiO₂		≤0.2%	≤0.2%	≤0.2%
Moisture		≤0.2%	≤0.2%	≤0.2%
Water Soluble Objects		≤0.3%	≤0.3%	≤0.3%
Residue on Sieve (45μm)		≤0.5%	≤0.5%	≤0.5%
D50	μm	1.2-2	2.-8	0.5-1
Natural Stockpile Density	g/cm³	0.6-0.8	1.2-1.5	0.4-0.65
Cr(VI)		Minimum 0-5PPM, customization is available	Minimum 0-5PPM, customization is available	Minimum 0-5PPM, customization is available

Percentage values carry the % sign inside the cell in the specification and are reproduced as printed.
The RSR-2 D50 value is printed "2.-8" in the specification and is reproduced as printed.
Cr(VI) is stated once in the specification for all grades.
Source terminology "Water Soluble Objects" and "Refractory Chromium Powder (RSR)" is kept as printed.