Potassium Iodide Acs Usp Grade Pure Chemical Fine Powder Small Package 20 Grams

US $135

NV, United States
May 27th

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Gold Cloud Inc Honesty is Gold Click Here to Enter the Store... With this order you are getting 20.0 grams (net weight) of AR grade potassium iodide (KI), packaged in a sealed non-transparent bag. You can be assured to get the best quality KI that is free from large crystal or hard lumps (that indicates possible water content). Please note that combined shipping discount is not available on this sample package. We also offer other quantities at the BEST PRICES in the US: 50 grams 100 grams 500 grams 1000 grams 5 KGs 10 KGs Pure KI is in a white fine crystal or powder form, to be kept in a dark sealed container at a cool place. It is moisture and (very) light sensitive. The iodine will dissociate over the time or under light to show a yellow to orange color. We have had many buyers asking about how to tell the purity of potassium iodide. It is not straightforward to determine the exact purity of potassium iodide as the analytical process requires standard of other chemicals and multiple steps. However, it is easy to perform a few preliminary tests to rule out the impurity. - Pure KI has a solubility of ~140 g/100mL of water. With a good scale, you can measure a small amount of sample and add corresponding amount of distilled water (also using weight to be more accurate) for this test. For example, you can mix approx. 14 grams of KI with 10 grams of water (it will get cold) and wait for it to reach room temperature. All the crystal should dissolve. If small amount is still there after a while, additional 2 or 3 drops of water should take care it. This is probably caused by measuring errors or a temperature difference. We have ordered some samples from China and found them to fail the purity test by a large margin. - A clean potassium iodide water solution will be able to dissolve pure iodine solid, in a ratio of 1 grams of KI to 1.5 grams of iodine, by forming a complex ion. - Some claim that a tasting method can give a clue. However, it is not recommended due to safety reasons. Avoid direct skin contact as any other chemicals. Be sure to read MSDS before handling this chemical. The buyer is responsible for safe handling and usage of such chemicals after delivery. Specification: KI Purity >99.5% F.W. 160.00 Density: 3.13g/cm^3 Solubility in water(@25C): ~1440g/L CAS#: 7681-11-0 If you need a larger quantity, please send us a special request. Paypal is the preferred payment method by eBay. I do take other forms of payments. Please ask. Payment is expected within 2 days from the time of purchase unless another arrangement is made. All payments are specified in US Dollars (US$). Please check the shipping details in this listing. All items are shipped within specified handling time, although most time we try to ship ASAP. Shipping might be delayed on holidays and weekends due to the closure of USPS. Base shipping rate applies to US shipping only. International shipping is restricted for some items, please contact us for details. We are glad to offer returns within specified time frames. We ask you to kindly follow a few steps to make the return as smooth as possible. Carefully examine items upon receiving the package. Please keep the vacuum package (if applicable) intact if you find a problem (e.g., wrong item or broken item). Some items cannot be returned if the seal is broken. If you encountered a problem with our items, take a few pictures immediately. Make sure picture the vacuum package (if applicable) as some items come with a package with a embossed company seal that identifies the contents. Email the pictures and description of the problems via eBay email or goldcloudinc at gmial. Feel free to ask question and we will address your concerns as quickly as possible. We always try to provide the best services possible. Your satisfaction is our goal. Click for Email Support