Blood alcohol over .3 is possibly deadly and .40 and over is most likely deadly so a .85 in a child would definitely end in death. However you cant equate ethyl alcohol with beer, wine or hard liquor as it is two different things. ethyl alcohol will make you sick in small doses( can cause blindness coma, death in larger doses). also considering ethyl alcohol is like acetone and naptha in that it evaporates extremely quickly so the danger is limited mainly due to the ingestion of it directly from a bottle(purell in this case).
It is common sense to keep stuff like this away from very young children. However it seems like in the world anymore common sense is like wrought iron- was everywhere up until a short time ago and now you could spend years searcing for it and come up with nada.
Sean