Report an accessibility problem

Engineering | Safe Engineering

Protected: Hydrogen Gas (old)

I've worked with flammable materials before. What makes hydrogen special? Hydrogen gas (CAS# 1333-74-0) has a low LEL and a broad flammability range. The LEL, or lower explosive/flammable limit, is the lowest volume percent in air at which the gas can flash or catch...

Thiols, Mercaptans, and Other Stench Chemicals

What is a stench chemical? Stench chemicals have an extremely foul smell that is detectable by the human nose in parts-per-billion amounts, depending on the compound. While the stench may not be known to have toxic effects, it can still negatively impact laboratory...

Chloroform, Dichloromethane, and Other Halogenated Organic Compounds

Chloroform is a common solvent, starting with NMR samples in sophomore-level chemistry. Why should I worry? Chloroform, dichloromethane, and many other halogenated organic compounds readily pass through nitrile gloves. This means that the disposable gloves most people...

Anesthetic Gases

Anesthetic Gases Long-term expsosure to these gases can cause serious health effects. Acute exposures can cause loss of consciousness in the lab. Nitrous Oxide, and halogenated anesthetic gases such as: enflurane (CAS# 13838-16-9) desflurane (CAS# 57041-67-5)...