Air products and chemicals

Economic Aspects. A number of secondary and tertiary acetylenic alcohols and glycols are manufactured by Air Products and Chemicals Co. In 1990, U.S. bulk prices of ethyloctynol, methylbutynol, and tetramethyldecynediol were about 8.35/kg, 3.95/kg, and 8.00/kg, respectively. 

Mixtures of 10 and 20% fluorine ia nitrogen or other inert gases are commercially available ia cylinders and tube trailers from Air Products and Chemicals, Inc. Blends can be safely packaged and stored at high, eg, 13.8 MPa (2000 psi), pressure. Filled with a 20% fluorine blend, tube trailers can contain up to 500 kg of fluorine. Such high pressure mixtures permit larger quantities of fluorine to be safely shipped. 

U.S. production of bromine trifluoride is several metric tons per year mostiy used in oil-weU cutting tools. Air Products and Chemicals, Inc. is the only U.S. producer. The 1992 price was ca 80/kg. 

Inorganic Fluorine Compounds, buUetia, Air Products and Chemicals, Inc., Allentown, Pa., 1974. 

Sulfur hexafluoride was first prepared in 1902 (1). The discovery in 1937 that its dielectric strength is much higher than that of air (2) led to its use as an insulating material for cables, capacitors (3), and transformers (4) (see Insulation,electric). Sulfur hexafluoride has been commercially available as AccuDri, SF (AUiedSignal Inc.) since 1948. It is also produced by Air Products and Chemicals in the United States and by others in Germany, Italy, Japan, and Russia. 

Preparation. In the laboratory, sulfur tetrafluoride is made by combining SCI2 and NaF suspended in acetonitrile at ca 77°C (106). For commercial production, SF is made by direct combination of sulfur with elemental fluorine (107). Commercial appHcations of SF are limited. It is available from Air Products and Chemicals. 

Johnson—Matthey/AESAR group, Aldrich Chemical, and EM Industries, Inc. Ultrahigh purity (99.999%) material is available only from Air Products and Chemicals, Inc. of Allentown, Peimsylvania. The price varies depending on the purity of the material from 25/kg (99%) through 250/kg (99.99%), to 1500—2500/kg (99.999%). Consumption of ZrF in the United States is less than 5000 kg/yr. 

The following companies manufacture organic fluorine compounds by direct fluorination techniques 3M Exfluor Air Products and Chemicals,... 

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