what is the ratio for making aqueous stannous chloride?
i have stannous salts and i would like to test my ar sollution for gold.
the solution contains nitric acid, muriatic, urea, smb,h2o, maybe compounds of gold silver copper zink tin and lead.
its a mix of various ar test batches. some had high karat gold, some only had plated and filled gold jewelery.
i got this b4 reading hoke
my first batch of test solution has 3.5 grams of stanous salt, 7 ml of hcl (34%) and 15 ml of tap water but it showed no color change on my ar solution.
help?
i need the foumula and/or mixing ratios for preparing stannous chloride testing solution from salt.
HOKE SAYS"Take about a pennyweight of thestannous chloride crystals (also called tin salts) in the droppingbottle, add a pennyweight or less of tin metal, and fill the bottlethree-fourths full of water. Ordinary tap water will do. Now adda little hydrochloric acid, about 25 or 30 drops to a 30 cc. bottle."
i dont know what a pennyweight is exactly. id estimate 1-10 grams but its not clear nor safe when you are forced to guess at mixtures.also i dont have a dropper to count 25 drops and i dont know how many mL is in a 30cc bottle. i need to know exact measurements and or ratios to make stannous chloride aqueous solution to test gold.
the formula i tried making from hokes explanation is not working. i touch a q-tip to my yellow ar solution the qtip turns yellow. than i put a drop of the stannous chloride solution solution made based off of hokes suggestions. and it turned the q tip back to white...
what does it mean?
i need to know the actual working ratios and method to make a working test solution to test for gold and other precious metals
how do i make stanous chloride (aq) correctly?
i have stannous salts and i would like to test my ar sollution for gold.
the solution contains nitric acid, muriatic, urea, smb,h2o, maybe compounds of gold silver copper zink tin and lead.
its a mix of various ar test batches. some had high karat gold, some only had plated and filled gold jewelery.
i got this b4 reading hoke
my first batch of test solution has 3.5 grams of stanous salt, 7 ml of hcl (34%) and 15 ml of tap water but it showed no color change on my ar solution.
help?
i need the foumula and/or mixing ratios for preparing stannous chloride testing solution from salt.
HOKE SAYS"Take about a pennyweight of thestannous chloride crystals (also called tin salts) in the droppingbottle, add a pennyweight or less of tin metal, and fill the bottlethree-fourths full of water. Ordinary tap water will do. Now adda little hydrochloric acid, about 25 or 30 drops to a 30 cc. bottle."
i dont know what a pennyweight is exactly. id estimate 1-10 grams but its not clear nor safe when you are forced to guess at mixtures.also i dont have a dropper to count 25 drops and i dont know how many mL is in a 30cc bottle. i need to know exact measurements and or ratios to make stannous chloride aqueous solution to test gold.
the formula i tried making from hokes explanation is not working. i touch a q-tip to my yellow ar solution the qtip turns yellow. than i put a drop of the stannous chloride solution solution made based off of hokes suggestions. and it turned the q tip back to white...
what does it mean?
i need to know the actual working ratios and method to make a working test solution to test for gold and other precious metals
how do i make stanous chloride (aq) correctly?