what a strange coincidence!!!
had a call sat night, custy had spilt tin of emulsion onto carpet . went round sunday morning to remove, got chatting, and he worked for a company that supplies a range of products including one that sounds similar to above. He said that it was supplied to C/D it is self neutralising and turns yellow in appearance after a period of time. unfortunatly i did not take a great deal of notice as was in a hurry ,so can not go into more detail , but i did say would have a chat at a later date about the product.
Geoff