19 new, revised, or reaffirmed guides. Included are:

• Acrolein
• Allyl Chloride
• Benzyl Chloride
• Chlorine
• 1,1-Dichloroethylene
• Dicyclopentadiene
• Dowtherm Q
• Epichlorohydrin
• Ethyl Chloroformate
• 2-Ethylhexanol
• HCFC-123
• Methanol
• Methyl Chloroformate
• 1-Octene
• Tetrahydrofuran
• Thionyl Chloride
• Uranium Dioxide
• Uranium Trioxide
• Vinyltrichlorosilane