Month: December 2022

Hagihara, Yutaka published the artcileAP-HTPB composite propellant using freeze-dried ammonium perchlorate. 1. In the case of a spray for home use as an atomizer, Computed Properties of 2016-56-0, the publication is Kogyo Kayaku (1991), 52(2), 108-14, database is CAplus.

Porous conglomerate particles (apparent diameter 10-300 ¦Ì) of ultra-fine NH₄ClO₄ (0.5-10 ¦Ì) were prepared by spraying 10% NH₄ClO₄ solution containing organic surfactants into N(l) by freeze-drying process. The particles were characterized by SEM and x-ray diffraction, and the average diameter calculated from Brunauer-Emmett-Teller sp. surface area was 2-5 ¦Ì. The particles prepared from NH₄ClO₄ solutions containing 0.2% Na dodecylbenzenesulfonate had the min. diameter, and propellants containing the particles showed the maximum burning rate. The particles were mixed with hydroxyl-terminated polybutadiene (HTPB) to give a castable propellant. Propellants with maximum particle content was obtained by using particles prepared from NH₄ClO₄ solutions containing 0.2% Na dodecylbenzenesulfonate with addition of ferrous fumarate as combustion catalyst and slurry viscosity depressor.

Kogyo Kayaku published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C14H31NO2, Computed Properties of 2016-56-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Guzel, Y. published the artcileInvestigation of the relationship between the inhibitory activity of glycolic acid oxidase (GAO) and its chemical structure: electron-topological approach, Name: 2-(4-(tert-Butyl)phenoxy)acetic acid, the publication is Journal of Molecular Structure: THEOCHEM (1996), 366(1-2), 131-137, database is CAplus.

Rules for the occurrence of the inhibitory activity of glycolic acid oxidase are formulated and discussed in terms of the so-called electron-topol. approach. It is shown that the mol. fragment responsible for this kind of activity possesses fixed electronic and geometrical characteristics caused by a definite spatial arrangement of an oxygen atom and a group of carbon atoms. A series of 85 compounds including 36 active and 49 inactive compounds was studied.

Journal of Molecular Structure: THEOCHEM published new progress about 1798-04-5. 1798-04-5 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2-(4-(tert-Butyl)phenoxy)acetic acid, and the molecular formula is C12H16O3, Name: 2-(4-(tert-Butyl)phenoxy)acetic acid.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gunstone, F. D. published the artcileHigh resolution carbon-13 NMR study of synthetic branched-chain acids and of wool wax acids and isostearic acid, Related Products of catalysis-chemistry, the publication is Chemistry and Physics of Lipids (1993), 65(2), 155-63, database is CAplus.

The ¹³C NMR spectra of 28 C_6-18 branched-chain fatty acids (including two from the literature) were recorded and assigned. They were mainly methyl-branched but also included C_2-6 and C₁₆ branches. Branched-chain acids in wool grease and industrially produced isostearic acid were examined

Chemistry and Physics of Lipids published new progress about 3115-28-4. 3115-28-4 belongs to catalysis-chemistry, auxiliary class Aliphatic Chain, name is 2-Butylhexanoic acid, and the molecular formula is C10H20O2, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Grudzinski, S. published the artcileCyanomethyl esters. V. Reaction of cyanomethyl esters of carboxylic acids with cyanoethylhydrazine, Product Details of C3H12Cl2N2, the publication is Lodz Towarz. Nauk., Wydzial III, Acta Chim. (1965), 85-93, database is CAplus.

cf. CA 65, 681f. The appropriate cyanomethyl ester RCO₂CH₂CN{Alt}{179}(I) treated with H₂-NNH(CH₂)₂CN (II) furnished the following RCONHNH-(CH₂)₂CN (R, % yield) and m.p. (b.p.) given: Me (III), 73, (b_1.5 162-6¡ã); Et (IV), 73, (b_1.5 158-62¡ã); 4-O₂NC₆H₄, 55.5, 164.5-6¡ã; PhOCH₂, 73, 106-8¡ã; AcNHCH₂, 92.5, 108-11¡ã; BzNHCH₂ (V), 89.5, 132-4¡ã; 4-AcNHC₆H₄SO₂NHCH₂, 80, 152-4¡ã; 2-phenyl-4-quinolyl, 39.5, 165-6¡ã. V was prepared by using 20% excess of II, the others by using 100% excess of II. III and IV were prepared by keeping a mixture of the resp. I and II at room temperature 24 hrs. For the others an approx. 1-2M solution of I in a suitable solvent was left with II 24 hrs.

Lodz Towarz. Nauk., Wydzial III, Acta Chim. published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, Product Details of C3H12Cl2N2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Grudzinska, P. published the artcileReaction of cyanomethyl esters of carboxylic acids with arylhydrazines. IV. Synthesis of tolylhydrazides, Formula: C3H12Cl2N2, the publication is Lodz Towarz. Nauk., Wydzial III, Acta Chim. (1965), 75-83, database is CAplus.

cf. CA 59, 9969g. The reaction between tolylhydrazine (I) and cyanomethyl esters of carboxylic acids (in mole ratio 2:1) gave the following MeC₆H₄NHNHCOR (II) [R, m.p., and % yield (based on cyanomethyl ester) being given for the reactions conducted in AcOEt and without solvent resp.]: p-II: BZNHCH₂, 176-7¡ã, 95, 98.5; PhSO₂NHCH₂, 178-80¡ã, 95, 97; p-MeC₆H₄SO₂NHCH₂, 163-4¡ã, 97, 100; 4-pyridyl (as HCl salt), 239-41¡ã (decomposition), 73, 87; m-II: BZNHCH₂, 178-9¡ã, 92, 98; PhSO₂NHCH₂, 145-6¡ã, 95, 95; p-MeC₆H₄SO₂– NHCH₂, 158-9¡ã, 90, 94; 4-pyridyl, 161-2¡ã, 69, 81; o-II: Bz-NHCH₂, 172-3¡ã, 80, 89; PhSO₂NHCH₂, 145-6¡ã, 81, 85; p-MeC₆H₄SO₂NHCH₂, 164-5¡ã, 62, 79; 4-pyridyl, 209-10¡ã, 50, 85. The reaction mixture was usually kept 20 hrs. at room temperature In cases where no solid separated, either inoculation or distillation of the solvent in vacuo followed by addition of Et₂O initiated the crystallization

Lodz Towarz. Nauk., Wydzial III, Acta Chim. published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, Formula: C3H12Cl2N2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Grindlay, J. W. published the artcileSpecial applications of thin-layer chromatography in the identification of diphenylamine derivatives, Recommanded Product: Bis(4-nitrophenyl)amine, the publication is Explosivstoffe (1973), 21(5), 177-81, database is CAplus.

Products of nitrosation and nitration of Ph2NH, 2-nitrodiphenylamine, N-nitrosodiphenylamine, 4-nitrosodiphenylamine, and N-methyldiphenylamine were separated and identified by thin-layer chromatog. by using microscope slides coated with thin layers of adsorbent. This technique is very rapid and simple. Tables of Rf values and colors developed with various reagents are presented. Preliminary information on the reactions was obtained by allowing Ph2NH and some of its derivatives on coated slides to react with nitric and nitrous fumes for various times before development. The results generally follow the pattern found in earlier investigations of Ph2NH reaction products in propellants in which Ph2NH derivatives were used as stabilizers.

Explosivstoffe published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Recommanded Product: Bis(4-nitrophenyl)amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Green, Floyd J. published the artcilePolychromasia of Cresyl Violet dyes; a chemical explanation of variations in pre-World War II products, Category: catalysis-chemistry, the publication is Stain Technology (1966), 41(4), 223-8, database is CAplus and MEDLINE.

Darrow Red (9-acetylamino-5-aminobenzo[¦Á]phenoxazonium chloride) and its 10-Me derivative, precursors of Cresyl Violet acetate (5,9-diaminobenzo[¦Á]phenoxazonium acetate) and 5,9-diamino-10-methylbenzo[¦Á]phenoxazonium acetate (the compound which duplicates visible absorbance spectra of the violet component of prewar German Cresyl Fast Violet and the current foreign product Cresyl Fast Violet), yielded polychrome products when subjected to alk. hydrolyses. The hydrolyses were accomplished by refluxing 17.5 g. of each acetylated compound with 25 g. NaOH in 250 ml. H₂O. At the end of 1.5 hrs., visible spectra revealed, in each case, the presence of 3 components: the starting material, the deacetylated 9-amino compound (a Cresyl Violet) and the 5-oxo derivative Addnl. refluxing for 6.5 hrs. resulted in a product containing only the deacetylated 9-amino compound and the 5-oxo derivative in approx. equivalent amounts The latter mixture was not altered by addnl. refluxing. Absorbance maximum of compounds resulting from the hydrolysis of the 10-Me derivative of Darrow Red were bathochromic by 4-6 m¦Ì to their counterparts obtained from the hydrolysis of Darrow Red. Minor variations in manufacturing processes can readily affect the properties of these biological stains.

Stain Technology published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gorvin, John H. published the artcileThe synthesis of di- and triarylamines through halogen displacement by base-activated arylamines: comparison with the Ullmann condensation, Category: catalysis-chemistry, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1988), 1331-5, database is CAplus.

Diarylamines, e.g. RC₆H₄NHC₆H₄R¹ (I; R = 2-, 4-NO₂, 2-, 4-cyano; R¹ = 2-, 4-NO₂, 2-, 4-cyano), were prepared by nucleophilic substitution of R¹C₆H₄F by RC₆H₄NH₂ (II) in the presence of Me₃COK in Me₂SO at room temperature Triarylamines, e.g. RC₆H₄N(C₆H₄R¹)(C₆H₄R²), (R = 2-, 4-NO₂, 4-cyano; R¹ = 2-, 4-NO₂, 4-cyano; R² = 2-, 4-NO₂, 4-cyano) were similarly prepared from I and R²C₆H₄F at 125-150¡ã. Certain aryl chlorides, e.g. R¹C₆H₄Cl (R¹ = 2-, 4-NO₂), underwent nucleophilic substitution with II (R = 2-, 4-NO₂) in the presence of Cs₂CO₃ to give 66-90% I. It was confirmed that alkali metal carbonates play only an auxiliary role in the Ullmann (copper-assisted) diarylamine synthesis conducted in dipolar aprotic solvents.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gijsman, Pieter published the artcileNew synergists for hindered amine light stabilizers, COA of Formula: C7H14N4, the publication is Polymer (2002), 43(5), 1573-1579, database is CAplus.

The development of hindered amine light stabilizers (HALS) in the seventies led to a tremendous increase in the outdoor use of polyolefins. Although since that time a great deal of insight has been gained into the UV-degradation mechanism of polyolefins and the mechanism of action of HALS, no new UV-stabilization chem. has been discovered. The most recent thoughts about the UV-degradation mechanism of polyolefins (initiation of photooxidation by polymer oxygen charge transfer complexes (CTCs)) and new insights into the mechanism of action of HALS stabilizers (quenching of these CTCs) are explored as a basis for designing new UV-stabilizers. A mechanism is proposed that explains the action of HALS as a quencher. Based on this mechanism several other possible quenchers (bridged amines) have been suggested. These bridged amines are active as UV-stabilizers in films and plaques and they show a synergism with HALS stabilizers. These new stabilizers are the most effective when they are present at concentrations higher than 0.1% and at higher concentrations of HALS. In such cases the addition of these synergists to a HALS stabilized system can lead to an improvement of a factor of 2-3.

Polymer published new progress about 14707-75-6. 14707-75-6 belongs to catalysis-chemistry, auxiliary class Triazinanes, name is 1,3,5-Triazaadamantan-7-amine, and the molecular formula is C7H14N4, COA of Formula: C7H14N4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gaboriaud, Rene published the artcileAcidity constants of water-amine and water-acetic acid mixtures, Related Products of catalysis-chemistry, the publication is Comptes Rendus des Seances de l’Academie des Sciences, Serie C: Sciences Chimiques (1967), 264(11), 934-7, database is CAplus.

The ionization curves of indicators in these media are very deformed due to ionic interactions and intervention of solvent ions. The corresponding ionization constants can be calculated and related to the acidity functions. The dielec. constant of the medium does not affect the standard chem. potential of the ions.

Comptes Rendus des Seances de l’Academie des Sciences, Serie C: Sciences Chimiques published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia