Difference between revisions of "Lime"

Latest revision as of 13:52, 7 October 2022

Description

Any of several forms of calcium oxide obtained from heating Calcium carbonate (Limestone, Marble, Chalk, and shells). When calcium carbonate is heated to about 500 C, carbon dioxide is driven off leaving anhydrous Calcium oxide or Quicklime. When quicklime is soaked in water, it is changed to Calcium hydroxide or Slaked lime. Slaked lime that is dried and ground to a fine powder is called hydrated lime or lime hydrate. Lime will eventually harden and react with carbon dioxide to reform calcium carbonate. Lime is used in mortar, Cement, Stucco, Glass, Whitewash, Putty, leather tanning, papermaking, and as a water-softening agent.

Synonyms and Related Terms

calcium oxide; calcium hydroxide; calcia; quicklime; caustic lime; hot lime; hydraulic lime; hydrated lime; burnt lime; chaux (Fr.); cal (Esp., Port.); , Gebrannter Kalk, Gelöschter Kalk (Deut.); ongebluste kalk (Ned.)

Risks

Noncombustible.
Caustic material that may cause irritation and burns on contact.
Fisher Scientific: SDS

Physical and Chemical Properties

Slightly soluble in water.
Composition = CaO
pH = 12.5-12.8
Melting pt = 2614 C

Resources and Citations

Jonathan Taylor, "Lime: The Basics", Building Conservation Directory 2000 : Link

@@ Line 1: / Line 1: @@
 == Description ==
-Any of several forms of calcium oxide obtained from heating [http://cameo.mfa.org/materials/fullrecord.asp?name=calcium carbonate calcium carbonate] ([http://cameo.mfa.org/materials/fullrecord.asp?name=limestone limestone], [http://cameo.mfa.org/materials/fullrecord.asp?name=marble marble], [http://cameo.mfa.org/materials/fullrecord.asp?name=chalk chalk], and [http://cameo.mfa.org/materials/fullrecord.asp?name=seashell shells]).   When calcium carbonate is heated to about 500 C, carbon dioxide is driven off leaving anhydrous [http://cameo.mfa.org/materials/fullrecord.asp?name=calcium oxide calcium oxide] or [http://cameo.mfa.org/materials/fullrecord.asp?name=quicklime quicklime].  When quicklime is soaked in water, it is changed to [http://cameo.mfa.org/materials/fullrecord.asp?name=calcium hydroxide calcium hydroxide] or [http://cameo.mfa.org/materials/fullrecord.asp?name=slaked lime slaked lime].  Slaked lime that is dried and ground to a fine powder is called hydrated lime or lime hydrate.  Lime will eventually harden and react with carbon dioxide to reform calcium carbonate.  Lime is used in [http://cameo.mfa.org/materials/fullrecord.asp?name=mortar (masonry) mortar], [http://cameo.mfa.org/materials/fullrecord.asp?name=cement cement], [http://cameo.mfa.org/materials/fullrecord.asp?name=stucco stucco], [http://cameo.mfa.org/materials/fullrecord.asp?name=glass glass], [http://cameo.mfa.org/materials/fullrecord.asp?name=whitewash whitewash], putty, leather tanning, papermaking, and as a water-softening agent.
+Any of several forms of calcium oxide obtained from heating [[calcium carbonate]] ([[limestone]], [[marble]], [[chalk]], and [[seashell|shells]]).   When calcium carbonate is heated to about 500 C, carbon dioxide is driven off leaving anhydrous [[calcium oxide]] or [[quicklime]].  When quicklime is soaked in water, it is changed to [[calcium hydroxide]] or [[slaked lime]].  Slaked lime that is dried and ground to a fine powder is called hydrated lime or lime hydrate.  Lime will eventually harden and react with carbon dioxide to reform calcium carbonate.  Lime is used in [[mortar (masonry)|mortar]], [[cement]], [[stucco]], [[glass]], [[whitewash]], [[putty]], leather tanning, papermaking, and as a [[Water softener|water-softening agent]].
 == Synonyms and Related Terms ==
-calcium oxide; calcium hydroxide; calcia; quicklime; caustic lime; hot lime; hydraulic lime; hydrated lime; burnt lime; chaux (Fr.); cal (Esp., Port.); , Gebrannter Kalk, Gelschter Kalk (Deut.); ongebluste kalk (Ned.)
+calcium oxide; calcium hydroxide; calcia; quicklime; caustic lime; hot lime; hydraulic lime; hydrated lime; burnt lime; chaux (Fr.); cal (Esp., Port.); , Gebrannter Kalk, Gelöschter Kalk (Deut.); ongebluste kalk (Ned.)
+== Risks ==
-== Other Properties ==
+* Noncombustible.
+* Caustic material that may cause irritation and burns on contact.
+* Fisher Scientific: [https://beta-static.fishersci.com/content/dam/fishersci/en_US/documents/programs/education/regulatory-documents/sds/chemicals/chemicals-c/S25227.pdf SDS]
-Slightly soluble in water.
+== Physical and Chemical Properties ==
-{| class="wikitable"
+* Slightly soluble in water.
-|-
+* Composition = CaO
-! scope="row"| Composition
+* pH = 12.5-12.8
-| CaO
+* Melting pt = 2614 C
-|}
-== Hazards and Safety ==
+== Resources and Citations ==
-Noncombustible. Caustic material that may cause irritation and burns on contact.
-== Additional Information ==
 Jonathan Taylor, "Lime: The Basics", Building Conservation Directory 2000 : [http://www.buildingconservation.com/articles/limebasic/limebasic.htm Link]
 [[Category:Materials database]]