Betekenis van:
water of crystallisation

Voorbeeldzinnen

1. Pure compounds containing no water of crystallisation.
2. In order to avoid crystallisation of Ba(OH)2 · 8 H2O, add to the warm mixture 30 ml water which is at room temperature.
3. Recovery and purification of α-cyclodextrin may be carried out using one of the following procedures: precipitation of a complex of α-cyclodextrin with 1-decanol, dissolution in water at elevated temperature and re-precipitation, steam-stripping of the complexant, and crystallisation of α-cyclodextrin from the solution; or chromatography with ion-exchange or gel filtration followed by crystallisation of α-cyclodextrin from the purified mother liquor; or membrane separation methods such as ultra-filtration and reverse osmosis.
4. Compound feed containing more than 4 % of sucrose or lactose: feed materials such as locust beans, hydrolysed cereal products, malt seeds, dried beet chips, fish and sugar solubles; compound feed containing more than 25 % of mineral salts including water of crystallisation.
5. A non-reducing cyclic saccharide consisting of six α-1,4-linked D-glucopyranosyl units produced by the action of cyclodextrin glucosyltransferase (CGTase, EC 2.4.1.19) on hydrolyzed starch. Recovery and purification of α-cyclodextrin may be carried out using one of the following procedures: precipitation of a complex of α-cyclodextrin with 1-decanol, dissolution in water at elevated temperature and re-precipitation, steam-stripping of the complexant, and crystallisation of α-cyclodextrin from the solution; or chromatography with ion-exchange or gel filtration followed by crystallisation of α-cyclodextrin from the purified mother liquor; or membrane separation methods such as ultra-filtration and reverse osmosis.
6. natural Chilean potassic sodium nitrate consisting of a natural mixture of sodium nitrate and potassium nitrate (the proportion of the latter element may be as high as 44 % ) of a total nitrogen content not exceeding 16,3 % by weight, produced in Chile by extraction from the nitrate mineral called ‘caliche’ by lixivation with a water solution, followed by crystallisation by differential cooling and/or solar evaporation (1).
7. natural Chilean potassic sodium nitrate consisting of a natural mixture of sodium nitrate and potassium nitrate (the proportion of the latter element may be as high as 44 %) of a total nitrogen content not exceeding 16,3 % by weight, produced in Chile by extraction from the nitrate mineral called "caliche" by lixivation with a water solution, followed by crystallisation by differential cooling and/or solar evaporation [1246] Delete as appropriate. .
8. natural Chilean potassic sodium nitrate consisting of a natural mixture of sodium nitrate and potassium nitrate (the proportion of the latter element may be as high as 44 %) of a total nitrogen content not exceeding 16,3 % by weight, produced in Chile by extraction from the nitrate mineral called "caliche" by lixivation with a water solution, followed by crystallisation by differential cooling and/or solar evaporation [1246] Delete as appropriate.
9. CERTIFICATE OF THE ISSUING AUTHORITYThe Servicio Nacional de Geología y Minería hereby certifies that the cargo of nitrate described above consists of:natural Chilean sodium nitrate of a nitrogen content not exceeding 16,3 % by weight (1),natural Chilean potassic sodium nitrate consisting of a natural mixture of sodium nitrate and potassium nitrate (the proportion of the latter element may be as high as 44 %) of a total nitrogen content not exceeding 16,3 % by weight, produced in Chile by extraction from the nitrate mineral called ‘caliche’ by lixivation with a water solution, followed by crystallisation by differential cooling and/or solar evaporation (1).Place and date:Signature:Stamp:11.