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Poisonous : Other, Yes, toxic if ingested
HS Code : 28255090
Ingredients : Copper (Cu), typically as Copper(II) Sulphate or similar compound
Smell : Other, Odorless
Shape : other, Crystalline
Appearance : Blue crystalline powder
Poisonous : NO
HS Code : 2835.39
Ingredients : Copper Rochelle salt components (sodium and tartaric acid molecules)
Smell : Other, Odorless
Shape : other, Irregular granules or fine powder
Appearance : Bluegreen crystalline powder
Poisonous : YES
HS Code : 2838.00.50
Ingredients : Contains zinc cyanide with additional formulation ingredients typical for plating salts
Smell : Other, Odorless or faint chemical smell
Shape : other, Irregular crystalline or granular particles
Appearance : White crystalline powder or granular form
Poisonous : NO
HS Code : 2508
Ingredients : Brass Compound
Smell : Other, Odorless
Shape : other, Granular
Appearance : Yellowish Granules