While I can not answer about this brand, I can tell you that all products off gas,even wood. In many cases the off-gassing is almost or completely done / gone by the time it rolls off the floor or into your house.
For those that are chemically sensitive it helps to know what products they are sensitive to so they can avoid it. While for others ventilating an area for a certain amount of time is all that might be required.
In many cases if a manufacturer says X we will triple or quadruple the time frame for ventilation.
For more information:
Read "Is linoleum a good flooring choice for our baby's nursery?" a Q&A answered by Marian Keeler.