Dangerous for the environment

[(C₂H₅)₂NCSS]₂Cu

[(C₂H₅)₂NCSS]₂Ni

(C₆H₄NH₂)₂O

CoCl₂ · 6H₂O

C₁₂H₆N₂ ·H₂O

[(C₂H₅)₂NCSS]₂Pb

NaN₃

PbF₂

RbClO₃

CdF₂

CoS • nH₂O

CeCl₃ • 7H₂O

As

KCr(MoO₄)₂

NiCrO₄ · Ni(OH)₂ · nH₂O

Cd(SCN)₂

K₂SbF₅

Li₂Cr₂O₇ • 2H₂O

(NH₂)₂CS

(CH₃COO)₃Sb

CuTe

I₂

[OOC-C(OH)(CH₂COO)₂]₂Pb₃ • 2H₂O

K₂[Ni(CN)₄] • H₂O

Bi₂Se₃

Cd(NbO₃)₂

Cd[Fe(NO)(CN)₅]

NaVO₃ • 2H₂O

Na₂BeF₄

NiSeO₃ • 2H₂O

PbSe

Na₂S • 9H₂O

PbI₂

PbF₂

Sb₂S₅

PbSeO₃

BaCr₂O₇ • 2H₂O

CdTiO₃

Cd

C6H5-CH=CH-C6H5

PbO

Pb₃O₄

PbO₂

Be

Ba(NO₂)₂ • H₂O

CuSeO₃ • CuO

CoSO₄ • 7H₂O

Zn(NO₃)₂ • 6H₂O

CuO

Pb₃(PO₄)₂