We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.
Last full accuracy audit: 2026-09-06 · 24 entries checked · 12 flagged · 26 issues confirmed · 0 corrected · 26 still open
Sodium acetate — The entry states 'The trihydrate crystals melt at 58–58.4 °C', but the widely accepted melting point of sodium acetate trihydrate is 58 °C (or 58.0 °C), not a range of 58–58.4 °C.
Sodium azide — The entry incorrectly states that sodium azide can be made by reacting sodium nitrite with sodium amide; this reaction does not yield sodium azide.
Sodium chromate — The industrial route to chromium(III) oxide typically involves reducing sodium dichromate, not sodium chromate, with sulfur or carbon.
Sodium chromate — The diagnostic agent for determining red blood cell volume is sodium chromate-51 (a radioactive isotope), not non-radioactive sodium chromate.
Sodium dichromate — The solubility value '49 g/L at 0 °C' is incorrect for sodium dichromate; the actual solubility is much higher, around 1630 g/L, and the given figure matches potassium dichromate.
Sodium dichromate — The claim that acidification can be done with carbon dioxide is inaccurate; industrial acidification of sodium chromate to sodium dichromate typically uses sulfuric acid, as carbon dioxide is too weak to shift the equilibrium.
Sodium dithionite — The entry states 'It is the active ingredient in 'Iron Out Rust Stain Remover.'' This is too broad; many Iron Out products list sodium bisulfite or sodium metabisulfite as the active ingredient, not sodium dithionite.
Sodium hydride — The entry states that NaH is 'insoluble in all solvents except molten sodium metal.' This is incorrect; NaH reacts with molten sodium rather than dissolving in it.
Sodium hydride — The entry claims that industrially NaH is prepared by mixing molten sodium with hydrogen in mineral oil at 'around 8000 rpm.' This specific rpm figure is not a standard or widely documented part of the industrial preparation.
Sodium hydroxide — The monohydrate crystallizes from water solutions between approximately 12.3 and 65.0 °C, not 61.8 °C as stated.
Sodium hydroxide — The reaction of iron with sodium hydroxide at high temperatures does not produce elemental sodium metal; it typically produces sodium ferrate or iron oxides and hydrogen.
Sodium nitrate — The first documented shipment of Peruvian saltpeter to Europe occurred in 1830, not 1820 or 1825.
Sodium nitrate — The widely known account is that the first shipment was dumped because it was deemed worthless or unsalable, not specifically to avoid customs tolls.
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