[dhm914]

actually some chemiclas can kill in ppm (parts per million) amounts. it is not just the amount, it is what the stuff is.

I dont know the safe limit for hexane, but dont diss the small numbers, as some stuff is very deadly in small amounts.

[NVDave]

There’s no point in wandering around in the dark when the MSDS for such industrial materials are widely available online:

http://www.scholarchemistry.com/msds/Hexanes.pdf

See “Section 11.”

See that LD50 on rats? This stuff isn’t even deadly in large amounts.

[Cletus.D.Yokel]

OSHA DATA (Sax):

PEL: 50 ppm TWA (transitional, 500 mg/cubic meter)
ACGIH TLV: 50 ppm TWA
NIOSH REL: 350 mg/cubic meter

Toxicity Data of note (Sax):

orl-rat (LD50): 28710 mg/kg

[1010RD]

Dose makes the poison!