Everything below is a published result on the parent material — the mineral wool byproduct every SecondLife material is separated from. None of it is a measurement of an individual stream. We state it that way deliberately, because a buyer who discovers the distinction during qualification has been misled.
Published in 10X Engineered Materials' Safety Data Sheets for EpiX, KinetiX and DynamiX, all revised 23 April 2024. The composition is identical across those products because nothing is added downstream: it is a property of the melt, which is why it carries to every separated stream. Weight percentages are for the parent material and have not been re-assayed per stream.
| Component | Formula | Weight % |
|---|---|---|
| Silicon dioxide (amorphous) | SiO2 | 35–45 |
| Silicon dioxide (crystalline) | SiO2 | not detectable |
| Calcium oxide | CaO | 25–35 |
| Magnesium oxide | MgO | 5–15 |
| Aluminum oxide | Al2O3 | 5–15 |
| Iron oxide | FeO | 0–3 |
| Titanium dioxide | TiO2 | 0–0.5 |
| Beryllium | Be | 0.00058 |
Each statement below is 10X Engineered Materials' determination on its own products, cited to the document it comes from. We publish them here because the melt is the same; we do not present them as measurements of a SecondLife stream.
The regulated crystalline forms of silicon dioxide — quartz, cristobalite and tridymite — have not been detected in multiple tests of the parent material using NIOSH Method 7500 at an analytical reporting limit of 0.1%.
Source: 10X DynamiX Safety Data Sheet v2.0, Section 3, revised 23 April 2024
The granted US patent covering this material characterises it as a non-metallic solid formed from greater than 99% amorphous glass containing less than 0.1% quartz, tridymite or cristobalite.
Source: US Patent 11,155,734 B1, Ricci and Wohlert, granted 26 October 2021
The parent material has been tested under EPA Method 1311 (TCLP) across all eight RCRA metals. Barium came back at 0.217 mg/L against a 100 mg/L regulatory limit, and mercury, arsenic, cadmium, chromium, lead, selenium and silver were all below the detection limit of the method.
Source: 10X Technical Data Sheets, environmental block; metals by EPA 6010D, mercury by EPA 7471B
Tested by Washington State Department of Ecology Method 80-12, a 96-hour acute fish toxicity test, the parent material produced zero mortality at both 10 mg/L and 100 mg/L.
Source: 10X KinetiX Safety Data Sheet v5.0, Section 12 (Rainier Environmental, 2021); thresholds per WAC 173-303-100
The material composition matches slag wool, a subclass of mineral wool. In 2001 an IARC working group reviewed decades of human epidemiological and animal toxicological studies and classified insulation glass wool, continuous glass filament, rock (stone) wool and slag wool as Group 3 — not classifiable as to carcinogenicity in humans. Slag wool is not listed by the US National Toxicology Program.
Source: IARC Monograph on the Evaluation of Carcinogenic Risks to Humans, Volume 81, Man-Made Vitreous Fibres (2002); cited in 10X DynamiX SDS v2.0, Section 11
Specific gravity 2.7 to 2.9. Melting point approximately 1,150 °C. Insoluble in water. Non-flammable. Colour black to grey.
Source: 10X DynamiX Safety Data Sheet v2.0, Section 9
Every SecondLife Minerals material is made entirely from recovered post-industrial mineral content — a byproduct of mineral wool insulation manufacturing that would otherwise be landfilled, with no virgin mined or smelted input.
Source: Self-declared under ISO 14021. Not third-party verified; no environmental product declaration exists yet.
10X Engineered Materials holds product qualifications for its abrasive products. Those qualifications are specific to those abrasive products and do not extend to SecondLife Minerals materials, which are not abrasives. We will not cite them in support of these materials, and you should not accept them as evidence for these materials.
Source: Stated by SecondLife Minerals
This list is the honest state of the program. It is published because a buyer qualifying a material needs to know what is missing before spending time on it, not after.
SecondLife Minerals