(Q3978460)
Statements
KAl₇(NO₃)₄(OH)₁₆Cl₂ * 8H₂O
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5.ND.20
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5.ND.20
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Rotten stone, sometimes spelled as rottenstone, also known as tripoli, is fine powdered porous rock used as a polishing abrasive for metalsmithing and in woodworking.