Anhydrous
Definition
Regarding chemical substances, compounds, or solvents: containing no water (or water of crystallization), achieved through the complete elimination of moisture or water molecules from a hydrate [angro]. In a laboratory and industrial context, this well-defined structural descriptor applies to high-purity acids, salts (such as anhydrous copper sulfate), or alcohols used as reagents in organic chemical syntheses where the presence of water would inhibit or alter the reaction.
Bilingual Equivalents
- Anhydrous
- Dehydrated
Grammatical & Source Details
| Inflection Type | Variable adjective with standard masculine, feminine, and structural plural variations. |
| Formation | Neologistic compound borrowed from French (anhydre), formed structurally from the Greek negative prefix 'an-' (without) and the noun 'hydor' (water). |
| Spelling / Pronunciation | [æn.ˈhaɪ.drəs] |
| Source | Official Compendium of Chemical Nomenclature and Laboratory Reagent Standards |
Contextual Usage Examples
RO: Chimistul a utilizat alcool etilic anhidru ca solvent pentru a preveni descompunerea reactivului sensibil la umiditate.
EN: The chemist used anhydrous ethyl alcohol as a solvent to prevent the decomposition of the moisture-sensitive reagent.
RO: Această sare de tip anhidr absoarbe rapid umiditatea din aer, transformându-se structural într-un hidrat colorat.
EN: This anhydrous-type salt rapidly absorbs moisture from the air, structurally transforming into a colored hydrate.
RO: Analiza din laborator a confirmat că acidul acetic anhidru obținut are o puritate binedefinită de peste nouăzeci și nouă la sută.
EN: The laboratory analysis confirmed that the obtained anhydrous acetic acid has a well-defined purity of over ninety-nine percent.
Idioms & Phrases
Sare anhidră / Anhydrous salt
RO: Compus ionic binedefinit din care apa de cristalizare a fost îndepărtată complet prin încălzire controlată.
EN: A well-defined ionic compound from which water of crystallization has been completely removed through controlled heating.
Solvent de tip anhidr / Anhydrous solvent status
RO: Lichid organic purificat binedefinit în laboratoarele de sinteză care conține o cantitate infimă de apă reziduală.
EN: A well-defined purified organic liquid in synthesis laboratories containing a negligible amount of residual water.
Profil chimic anhidr / Anhydrous chemical profile
RO: Ansamblul trăsăturilor moleculare observate spectroscopic care atestă lipsa totală a benzilor de absorbție specifice apei.
EN: The set of molecular traits observed spectroscopically confirming the total absence of absorption bands specific to water.
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