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Diatomaceous earth - Revision history



Revision history for this page on the wiki



Last Build Date: Thu, 14 Dec 2017 04:51:47 GMT

 



Vsmith: /* Safety considerations */ remove unsourced claim

Tue, 05 Dec 2017 12:19:22 GMT

‎Safety considerations: remove unsourced claim ← Previous revision Revision as of 12:19, 5 December 2017 Line 140: Line 140:       Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels. −   − Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus and also Rheumatoid Arthritis.{{citation needed|date=November 2017}}         Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form.   Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form. [...]



Tedtoal: Fixed typo

Tue, 05 Dec 2017 05:13:32 GMT

Fixed typo ← Previous revision Revision as of 05:13, 5 December 2017 Line 141: Line 141:   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.     − Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis.{{citation needed|date=November 2017}} + Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus and also Rheumatoid Arthritis.{{citation needed|date=November 2017}}       Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form.   Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form. [...]



GünniX: v1.43 - WP:WCW project (Reference list missing - Template without correct end)

Wed, 22 Nov 2017 20:36:32 GMT

v1.43 - WP:WCW project (Reference list missing - Template without correct end) ← Previous revision Revision as of 20:36, 22 November 2017 Line 157: Line 157:       == References ==   == References == − {{Reflist|30em} + {{Reflist|30em}} − https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1566238/ + * https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1566238/       == External links ==   == External links == [...]



AnomieBOT: Dating maintenance tags: {{Citation needed}}

Tue, 21 Nov 2017 09:11:09 GMT

Dating maintenance tags: {{Citation needed}} ← Previous revision Revision as of 09:11, 21 November 2017 Line 141: Line 141:   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.     − Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis.{{citation needed}} + Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis.{{citation needed|date=November 2017}}       Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form.   Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form. [...]



Mikenorton: /* Safety considerations */ need a source for that

Tue, 21 Nov 2017 08:50:41 GMT

‎Safety considerations: need a source for that ← Previous revision Revision as of 08:50, 21 November 2017 Line 141: Line 141:   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.     − Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis. + Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis.{{citation needed}}       Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form.   Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form. [...]



86.25.145.118: /* References */Added content.

Tue, 21 Nov 2017 06:58:20 GMT

References: Added content.

← Previous revision Revision as of 06:58, 21 November 2017
Line 157: Line 157:
   
 
== References ==
 
== References ==
{{Reflist|30em}}
+
{{Reflist|30em}
  +
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1566238/
   
 
== External links ==
 
== External links ==



86.25.145.118: /* Safety considerations */Added content.

Tue, 21 Nov 2017 06:57:20 GMT

‎Safety considerations: Added content. ← Previous revision Revision as of 06:57, 21 November 2017 Line 140: Line 140:       Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   +   + Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis.       Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form.   Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form. [...]



Shellwood: Reverted edits by 2601:602:CD00:1AD4:7967:2E5D:743F:13CE (talk) (HG) (3.1.22)

Fri, 03 Nov 2017 23:18:07 GMT

Reverted edits by 2601:602:CD00:1AD4:7967:2E5D:743F:13CE (talk) (HG) (3.1.22) ← Previous revision Revision as of 23:18, 3 November 2017 Line 69: Line 69:   [[File:Diatoms through the microscope.jpg|thumb|Live marine diatoms from Antarctica (magnified)]]   [[File:Diatoms through the microscope.jpg|thumb|Live marine diatoms from Antarctica (magnified)]]     − In 1866, [[Alfred Nobel]] discovered thet [[nitroglycerin]] could be made much more stable if absorbed in diatomite. This allows much safer transport and handling than nitroglycerin in its raw form. He patented this mixture as [[dynamite]] in 1867; the mixture is also called guhr dynamite. + In 1866, [[Alfred Nobel]] discovered that [[nitroglycerin]] could be made much more stable if absorbed in diatomite. This allows much safer transport and handling than nitroglycerin in its raw form. He patented this mixture as [[dynamite]] in 1867; the mixture is also called guhr dynamite.       === Filtration ===   === Filtration === [...]



2601:602:CD00:1AD4:7967:2E5D:743F:13CE: /* Explosives */

Fri, 03 Nov 2017 23:17:51 GMT

‎Explosives ← Previous revision Revision as of 23:17, 3 November 2017 Line 69: Line 69:   [[File:Diatoms through the microscope.jpg|thumb|Live marine diatoms from Antarctica (magnified)]]   [[File:Diatoms through the microscope.jpg|thumb|Live marine diatoms from Antarctica (magnified)]]     − In 1866, [[Alfred Nobel]] discovered that [[nitroglycerin]] could be made much more stable if absorbed in diatomite. This allows much safer transport and handling than nitroglycerin in its raw form. He patented this mixture as [[dynamite]] in 1867; the mixture is also called guhr dynamite. + In 1866, [[Alfred Nobel]] discovered thet [[nitroglycerin]] could be made much more stable if absorbed in diatomite. This allows much safer transport and handling than nitroglycerin in its raw form. He patented this mixture as [[dynamite]] in 1867; the mixture is also called guhr dynamite.       === Filtration ===   === Filtration === [...]



Wannanah: Changed plural of

Tue, 26 Sep 2017 22:05:02 GMT

Changed plural of ← Previous revision Revision as of 22:05, 26 September 2017 Line 4: Line 4:   '''Diatomaceous earth''' ({{IPAc-en|pron|ˌ|d|aɪ|.|ə|t|ə|ˌ|m|eɪ|ʃ|ə|s|_|ˈ|ɜr|θ}}), also known as '''D.E.''', '''diatomite''', or '''kieselgur'''/'''kieselguhr''', is a naturally occurring, soft, [[siliceous]] [[sedimentary rock]] that is easily crumbled into a fine [[Shades of white|white to off-white]] powder. It has a particle size ranging from less than 3 [[micrometres]] to more than 1 millimetre, but typically 10 to 200 micrometres. Depending on the granularity, this powder can have an [[abrasive]] feel, similar to [[pumice]] powder, and has a low [[density]] as a result of its high [[porosity]]. The typical chemical composition of oven-dried diatomaceous earth is 80 to 90% [[silica]], with 2 to 4% [[alumina]] (attributed mostly to [[clay mineral]]s) and 0.5 to 2% [[iron oxide]].{{cite book |last=Antonides |first=Lloyd E. |title=Diatomite |year=1997 |publisher=[[U.S.G.S.]] |url=http://minerals.usgs.gov/minerals/pubs/commodity/diatomite/250497.pdf |accessdate=December 12, 2010 |format=PDF}}   '''Diatomaceous earth''' ({{IPAc-en|pron|ˌ|d|aɪ|.|ə|t|ə|ˌ|m|eɪ|ʃ|ə|s|_|ˈ|ɜr|θ}}), also known as '''D.E.''', '''diatomite''', or '''kieselgur'''/'''kieselguhr''', is a naturally occurring, soft, [[siliceous]] [[sedimentary rock]] that is easily crumbled into a fine [[Shades of white|white to off-white]] powder. It has a particle size ranging from less than 3 [[micrometres]] to more than 1 millimetre, but typically 10 to 200 micrometres. Depending on the granularity, this powder can have an [[abrasive]] feel, similar to [[pumice]] powder, and has a low [[density]] as a result of its high [[porosity]]. The typical chemical composition of oven-dried diatomaceous earth is 80 to 90% [[silica]], with 2 to 4% [[alumina]] (attributed mostly to [[clay mineral]]s) and 0.5 to 2% [[iron oxide]].{{cite book |last=Antonides |first=Lloyd E. |title=Diatomite |year=1997 |publisher=[[U.S.G.S.]] |url=http://minerals.usgs.gov/minerals/pubs/commodity/diatomite/250497.pdf |accessdate=December 12, 2010 |format=PDF}}     − Diatomaceous earth consists of fossilized remains of [[diatom]]s, a type of hard-shelled [[protist]]s ([[chrysophytes]]). It is used as a [[filtration]] aid, mild abrasive in products including metal polishes and [[toothpaste]], mechanical [[insecticide]], [[absorption (chemistry)|absorbent]] for liquids, matting agent for coatings, reinforcing filler in plastics and rubber, anti-block in plastic films, porous support for chemical catalysts, [[cat litter]], activator in [[blood clotting]] studies, a stabilizing component of [[dynamite]], and a [[thermal insulation|thermal insulator]]. + Diatomaceous earth consists of fossilized remains of [[diatom]]s, a type of hard-shelled [[protist]] ([[chrysophytes]]). It is used as a [[filtration]] aid, mild abrasive in products including metal polishes and [[toothpaste]], mechanical [[insecticide]], [[absorption (chemistry)|absorbent]] for liquids, matting agent for coatings, reinforcing filler in plastics and rubber, anti-block in plastic films, porous support for chemical catalysts, [[cat litter]], activator in [[blood clotting]] studies, a stabilizing component of [[dynamite]], and a [[thermal insulation|thermal insulator]].       == Geology and occurrence ==   == Geology and occurrence == [...]