85 sounds high to me for an i3, but I don't actually know, nor have I looked up, the max temp for it, I do know mobile processors tend to have a higher max temp than traditionals.
I think the real question here is why did you ask this? Were you having problems?
Temp problems manifest themselves a few ways:
Super sluggishness because the CPU throttles way down.
Windows or other OS errors, when things go bad, they don't compute well, which is why you see stability problems on high ends of overclocking.
Graphics corruption on GPU overclocks, or simply bad drivers on normal clocks.
I'm sure there are some I missed, but that is the gist of it.
If you aren't seeing any problems, I wouldn't worry about it. Fixing laptop overheating problems yourself is more involved than doing the same on desktops.