Sulfamic acid table

Physical, Sulfamic acid is a diy acid having oithorhombic crystals. The pure crystals ate nonvolatile, nonhygroscopic, colodess, and ododess. The acid is highly stable up to its melting point and may be kept for years without change in properties. Selected physical properties of sulfamic acid are hsted in Table 1. Other properties are available in the hterature (5—8). 

Chemical Properties. Selected chemical properties of sulfamic acid are Hsted in Table 2 other properties are Hsted in Reference 9. 

Whereas sulfamic acid is a relatively strong acid, corrosion rates are low in comparison to other acids (Table 3). The low corrosion rate can be further reduced by addition of corrosion inhibitors (see Corrosion and corrosion control). 

Alkali metal sulfamates are stable in neutral or alkaline solutions even at boiling temperatures. Rates of hydrolysis for sulfamic acid in aqueous solutions have been measured at different conditions (Table 4) (8,10)-... 

Sulfamic Acid. Specifications and typical analyses of commercially available sulfamic acid are Hsted in Table 6. 

Table 6. Specifications and Analyses of Commercially Available Sulfamic Acid ...

Determination of Hydroxy-Nitrosamines. The column extraction procedure has proven flexible and convenient for isolating NDELA and BHP from a variety of matrices. No artifactual formation of these nitrosamines has been observed when sulfamic acid was incorporated with the sample. Addition of excess acid prevents elution of amines from the Celite column, minimizing nitrosation reactions at later stages. The triisopro-panolamine sample examined contained approximately 250 mg/kg BHP (Table IV). 

Buffers are necessary to adjust and maintain the pH. Buffering agents can be salts of a weak acid and a weak base. Examples are ammonium, potassium, sodium carbonates (caustic soda), bicarbonates, and hydrogen phosphates [1345]. Weak acids such as formic acid, fumaric acid, and sulfamic acid also are recommended. Common aqueous buffer ingredients are shown in Table 17-8. 

The dependence of the coercivity of Co(P) deposit on the concentration of the sulfamic acid (H3NO3S) and sodium sulfate (Na2S04) in solution is shown in Table 8.1, from which it can be seen (1) that the coercivity of Co(P) deposits is a function of the concentration of sulfamic acid and sodium sulfate in a basic solution, and (2) that an increase in the concentration of additives to the basic solution results in lowering of... 

TABLE 1. Proton Conductivity and Open-Circuit Testing Results for Electrolytic Membranes Consisting of Selected Polyamidic Acid Sulfamic Acid Derivatives Conducted at 150oC ... 

Thiazolyl sulfamic acids, rearrangement of sulfonic acid, 70 rearrangement to sulfonic acid, 75 by sulfonation, 75 2-Thiazolyl sulfenyl chloride, transformation to, thiazolyl disulfides. 412 2-Thiazolyl sulfide, in hydrocarbon synthesis, 406 oxidation of, with m-chloroperbenzoic acid, 415 with CrOj, 415 with Hj02,405,415 with KMn04,415 physical properties, infrared, 405 NMR, 404 pKa, 404 ultraviolet, 404 preparation of, from 2-halothiazoles and 5-Thiazolyl sulfides, bis-5-thiazolyl sulfide, oxidation of, 415 general, 418 5-(2-hydroxythiazolyl)phenyl sulfide case, 418 physical properties, 418 preparation of, 417-418 table of compounds, 493-496 uses of. 442 2-Thiazolyl sulfinic acid, decomposition of, 413 preparation of, from 2-acetamidothiazole sulfonyl chloride, 413 from A-4-thiazoline-2-thione and H, 0, 393,413 table of compounds, 472-473 5-Thiazolyl sulfinic add, preparation of,... 

Table I. Properties and Analyses of the Dialkylamides of (Trichlorophosphoranylidene)sulfamic Acid... 

Table 8.3. Taste threshold values of some alicyclic sulfamic acids (Na-salts)...

Mineral acids used in chemical cleaning operations include hydrochloric acid (HCI), hydrofluoric acid (HF), sulfuric acid (H2SO4), phosphoric acid (H3PO4), nitric acid HNO3), and sulfamic acid (H2NSO3H). Most of these acids have very low pKa values (see Table 1) and are completely ionized at the use strength. An exception is HF, which has a pKa value similar to that of formic acid, and phosphoric acid, which is about 10 times as ionized as HF. 

Nickel. Nickel plating continues to be very important. Many plating baths have been formulated, but most of the nickel plating is done in either Watts baths or sulfamate baths. Watts baths contain sulfate and chloride nickel salts along with boric acid, and were first proposed in 1916 (111). Nickel was first plated from sulfamate in 1938 (112) and patented in 1943 (108). The process was brought to market in 1950 (113). Typical bath compositions and conditions are shown in Table 14. 

Conceptual Flowsheet for the Extraction of Actinides from HLLW. Figure 5 shows a conceptual flowsheet for the extraction of all the actinides (U, Np, Pu, Am, and Cm) from HLLW using 0.4 M 0< >D[IB]CMP0 in DEB. The CMPO compound was selected for this process because of the high D m values attainable with a small concentration of extractant and because of the absence of macro-concentrations of uranyl ion. Distribution ratios relevant to the flowsheet are shown in previous tables, IV, V, VI, and VII and figures 1 and 2. One of the key features of the flowsheet is that plutonium is extracted from the feed solution and stripped from the organic phase without the addition of any nitric acid or use of ferrous sulfamate. However, oxalic acid is added to complex Zr and Mo (see Table IV). The presence of oxalic acid reduces any Np(VI) to Np(IV) (15). The presence of ferrous ion, which is... 

Nonhydrolyzable aspartyl adenylate analogues (14—16) (Table 4) have been prepared and tested as inhibitors of E. coli AspRS. Sulfamate (14) is a potent competitive inhibitor (A)= 15 nmol P ), whereas l-aspartol adenylate (15) is a weaker inibitor (A) = 45 pmoll ) with respect to aspartic acid. The corresponding /3-ketophosphonate (16) is also a strong inhibitor (A- = 123 nmol 1 ). Replacing the 5 -oxygen on the ribose with an NH group (compound 17) resulted in an equally potent inhibitor of the S. aureus enzyme (i) = 15 nmol 1 ). ... 

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