1. poolforum@gmail.com

2. "Cameo Chemicals" is really a NOAA spill database, here: http://cameochemicals.noaa.gov/

3. The reference to 39% dichlor is not a reference to a product, but to a potential condition. Supposedly, dichlor at available chlorine concentrations BELOW 39% behaves differently than dichlor at concentration above 39%.

Well, maybe. But it's NOT talking about any specific product.

4. The database has some significant errors and omissions. It does correctly recognize, for example, that cal hypo and cyanuric acid react badly together. But it lists hydrogen bromide and sulfur dioxide as potential by-products. Considering that there is no sulfur or bromine in either cyanuric acid or dichlor, that's a rather remarkable outcome.

It also claims that dichlor and cyanuric acid react badly together with each other. I'm skeptical. We'll see. But I'm pretty sure that if they DO react, you won't have any hydrogen bromide (again) as a byproduct!