BRIEFS sodium sulfhydrate vs. sulfide a dependable organic solvent and intermediate phosphorus pentachloride reaction Our Nialk® extraction grade boils between 86.6 and 87.4° C. Its acidity, as percent HC1, is zero. Alkalinity, as per cent NaOH, is only .006 to .008. Free halogen—none. No cloud at minus 12°C. Moreover, our product meets these specifications at all times.
IT'S IN THE "JOURNAL" SAVE 6.3^ A POUND On the basis of combined sulfur, sodium sulfhydrate is a far better buy than so dium sulfide. You get 62.6% more sul fur for a given weight of both products, which gives the sulfhydrate an edge of 6.3^ a pound. But that's not all. Hooker sodium sulfhydrate has high purity, 70% to 72% NaSH, most of the remainder be ing water of crystallization. Metallic contamination is kept to the order of 1 ppm for Cu, Ni, Cr, Mn, Pb. As low as 5 ppm for Fe. Other advantages : rapid-dissolving flakes, even in cold water; little or no sedimentation; low alkalinity as com pared with sodium sulfide. We always ship in new, lacquer-lined drums which have full-open heads. The inert lacquer lining protects the product completely during shipment and stor age. The full-open head makes for maximum ease in handling and charg ing your process. See coupon for data sheet. A SPECIAL T R I C H L O R . . . NIALK® EXTRACTION GRADE When you're extracting natural sub stances like vegetable oils, waxes, ani mal fats, or botanicals, use a trichlor ethylene that really fits your process.
Other uses? Nialk extraction grade makes a flame-proof solvent for adhesives, can be used as a "stopping" agent to control chain lengths in certain poly merizations or as an organic interme diate, and is used to extract caffeine from coffee. Check the coupon for data sheet giv ing full information on specifications, description, and uses.
If you've ever wondered about the mechanism for the reaction of phos phorus pentachloride with ketones, we refer you to the August 20, 1959, Jour nal of the American Chemical Society for an interesting article offering sev eral equations you may find useful. In cidentally, we make phosphorus penta chloride, a yellowish crystalline powder with a melting point of about 148° C. under slight pressure. Ordinarily it sublimes at about 160° C. at atmos pheric pressure. Among its uses : a sub stitute for the oxychloride to obtain tricresyl phosphate; as a general chlo rinating agent and catalyst; for organic synthesis. It finds much of its useful ness in pilot plant applications where its solid state is suited to small reactors. Check coupon for data.
For more information, check here and mail with name, title and company address : Π Sodium sulfhydrate data sheet D Trichlorethylene data sheet Π Sodium sulfide data sheet Π Phosphorus pentachloride data sheet
HOOKER CHEMICAL C O R P O R A T I O N 602-2 Forty-seventh Street, Niagara Falls, New York
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Sales Offices: Buffalo Chicago Detroit Los Angeles New York Niagara Falls Philadelphia Tacoma Worcester, Mass. In Canada: Hooker Chemicals Limited, North Vancouver, B. C.
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