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1 insoluble
in'soljubl1) ((of a substance) impossible to dissolve: This chemical is insoluble (in water).) uoppløselig2) ((of a problem or difficulty) impossible to solve.) uløselig•adj. \/ɪnˈsɒljʊbl\/1) uoppløselig2) uforklarlig, uløselig -
2 insoluble nickel salts
Химия: нерастворимые соли никеляУниверсальный англо-русский словарь > insoluble nickel salts
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3 sequestering agent (chemical used with acid in well treatment to inhibit precipitation of insoluble iron hydroxides formed when acid contacts scales or iron salts and oxides such as found in corrosion products on casing)
Англо-русский словарь нефтегазовой промышленности > sequestering agent (chemical used with acid in well treatment to inhibit precipitation of insoluble iron hydroxides formed when acid contacts scales or iron salts and oxides such as found in corrosion products on casing)
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4 Dyes
The following list gives a general classification of colouring matters for dyeing textile fibres: - Acid Colours dye animal fibres only and have no affinity for cellulose. If union goods are dyed with acid dyes the cotton remains white and the wool is dyed. They dye wool and silk from baths containing Glauber's salt and some acid, hence their name. Acid colours consist principally of the Azo compounds and are fairly cheap, so are used for the dyeing of dress materials, suitings, etc. No preparation of the fabric is necessary prior to dyeing. Wool and silk fabrics ate simply steeped in a warm acidified solution. Azo Dyes - These are colouring matters used for cotton dyeing and are developed direct on to the fibre. Basic Dyes - Cotton has no direct affinity for basic dyes, which consist of colour bases in combination with other chemicals, as tannic acid, sumach, or other tanning substances. Tannic acid is taken up by cotton which will then absorb the basic colours. They are very bright but not very fast. They dye wool and silk direct from plain baths. Developing Colours - See Developing Colours. Direct Cotton Colours - Dye cotton, linen, wool or silk directly, will dye cotton direct but by the addition of various salts deeper shades are obtained. With the addition of a little acid will dye wool and silk. See direct Dyes. Mordant Colours - As a rule these are very fast to washing and mostly fast to; light, such as logwood, black, Turkey red, etc. The mordant forms insoluble compounds with the colours, which are then applied to the fibres so that the insoluble coloured compounds are formed within the fibres The cotton is prepared first with some metallic mordant, as chrome, iron or alumina. Substantive Dyes - Have the property of dyeing fibres direct. They are Direct Dyes, that is they have an affinity for fibres. Sulphur and vat dyes are substantive towards cotton. Sulphur Colours are used for vegetable fibres only. These colours are insoluble in water and require the addition of sodium sulphide which converts them into soluble substances which will dye cotton. Usually fast to washing and alkalis - not so fast to bleaching (see Sulphur Colours). Vat Colours - These are fast dyes for cotton. They are insoluble in water so are converted into a soluble compound by some chemical reducing agent, and then they have a direct affinity for cotton which is dyed when immersed in the solution. There are two main classes, those prepared from anthraquinone and those related to indigo. They will dye viscose and cuprammonium rayons (see Vat Dyes) -
5 Fireproof Cloth
Cotton cloth treated with various chemical solutions is rendered flameproof, but only asbestos is truly fireproof. For fabrics that are not to be washed, sodium tungstate, borax, boric acid, aluminium acetate or sodium silicate are used mixed with some organic salt such as gypsum, chalk, Epsom salts, china clay, alum, etc. For fabrics that are to be washed such as flannelette - A soaking in a solution of sodium stannate and then in a solution of ammonium sulphate, dried and washed, will render the material flameproof. This process forms a more or less insoluble compound on the fibre. Other compounds used are aluminium sulphate and after-treatment with desodium hydrogen phosphate, to form aluminium phosphate on the fibre (see Asbestos cloth)
См. также в других словарях:
Insoluble phosphoric acid — Phosphoric Phos*phor ic, a. [Cf. F. phosphorique.] 1. (Chem.) Of or pertaining to phosphorus; resembling, or containing, from us; specifically, designating those compounds in which phosphorus has a higher valence as contrasted with the… … The Collaborative International Dictionary of English
insoluble — insolubility, insolubleness, n. insolubly, adv. /in sol yeuh beuhl/, adj. 1. incapable of being dissolved: insoluble salts. 2. incapable of being solved or explained: an insoluble problem. [1350 1400; < L insolubilis; r. ME insolible < MF… … Universalium
insoluble — in•sol•u•ble [[t]ɪnˈsɒl yə bəl[/t]] adj. 1) incapable of being dissolved: insoluble salts[/ex] 2) incapable of being solved: an insoluble problem[/ex] • Etymology: 1350–1400; ME insolible < MF insoluble < L insolūbilis; see in III, soluble… … From formal English to slang
insoluble — /ɪnˈsɒljubəl / (say in solyoohbuhl) adjective 1. incapable of being dissolved: insoluble salts. 2. that cannot be solved: an insoluble problem. {Middle English, from Latin insolūbilis} –insolubility /ɪnˌsɒljuˈbɪləti/ (say in.solyooh biluhtee),… …
oxyacid — /ok see as id/, n. Chem. an inorganic acid containing oxygen. Also called oxygen acid. [1830 40; OXY 2 + ACID] * * * ▪ chemical compound Introduction any oxygen containing acid. Most covalent nonmetallic oxides (oxide) react with water to… … Universalium
Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr … Wikipedia
nitrogen group element — ▪ chemical elements Introduction any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… … Universalium
lake — lake1 /layk/, n. 1. a body of fresh or salt water of considerable size, surrounded by land. 2. any similar body or pool of other liquid, as oil. 3. (go) jump in the lake, (used as an exclamation of dismissal or impatience.) [bef. 1000; ME lak(e) … Universalium
Lake — /layk/, n. Simon, 1866 1945, U.S. engineer and naval architect. * * * I Relatively large body of slow moving or standing water that occupies an inland basin. Lakes are most abundant in high northern latitudes and in mountain regions, particularly … Universalium
Calcification — The process of building bone by suffusing tissues with calcium salts. Also called ossification. * * * 1. Deposition of lime or other insoluble calcium salts. 2. A process in which tissue or noncellular material in the body becomes hardened as the … Medical dictionary
Glacial phosphoric acid — Phosphoric Phos*phor ic, a. [Cf. F. phosphorique.] 1. (Chem.) Of or pertaining to phosphorus; resembling, or containing, from us; specifically, designating those compounds in which phosphorus has a higher valence as contrasted with the… … The Collaborative International Dictionary of English
