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Marking blue: Revision history


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19 February 2024

18 February 2024

  • curprev 23:5323:53, 18 February 2024 77.16.211.66 talk 2,262 bytes −133 Safety: According to this wiki page, marking blue uses crystal violet, which contains no cyanide. This sentence claimed that it could form cyranogen when heated. Engineer's blue (which isnt the same as marking blue) is made with prussian blue which contains numerous CN groups. undo Tag: Reverted

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