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Diatomaceous earth - Revision history



Revision history for this page on the wiki



Last Build Date: Wed, 24 Jan 2018 09:55:32 GMT

 



InternetArchiveBot: Rescuing 1 sources and tagging 1 as dead. #IABot (v1.6.1) (Balon Greyjoy)

Fri, 15 Dec 2017 14:30:56 GMT

Rescuing 1 sources and tagging 1 as dead. #IABot (v1.6.1) (Balon Greyjoy) ← Previous revision Revision as of 14:30, 15 December 2017 Line 133: Line 133:       == Safety considerations ==   == Safety considerations == − Inhalation of ''crystalline'' silica is harmful to the lungs, causing [[silicosis]]. ''Amorphous'' silica is considered to have low toxicity, but prolonged inhalation causes changes to the lungs.https://www.cdc.gov/niosh/pel88/68855-54.html Diatomaceous earth is mostly [[Silicon dioxide|amorphous silica]], but contains some crystalline silica, especially in the saltwater forms.http://www.spca.bc.ca/assets/documents/welfare/professional-resources/farmer-resources/diatomaceous-earth-factsheet.pdf In a study of workers, those exposed to natural D.E. for over 5 years had no significant lung changes, while 40% of those exposed to the calcined form had developed [[pneumoconiosis]].https://www.cdc.gov/niosh/docs/81-123/pdfs/0552.pdf Today's common D.E. formulations are safer to use as they are predominantly made up of amorphous silica and contain little or no crystalline silica. + Inhalation of ''crystalline'' silica is harmful to the lungs, causing [[silicosis]]. ''Amorphous'' silica is considered to have low toxicity, but prolonged inhalation causes changes to the lungs.https://www.cdc.gov/niosh/pel88/68855-54.html Diatomaceous earth is mostly [[Silicon dioxide|amorphous silica]], but contains some crystalline silica, especially in the saltwater forms.{{cite web |url=http://www.spca.bc.ca/assets/documents/welfare/professional-resources/farmer-resources/diatomaceous-earth-factsheet.pdf |title=Archived copy |accessdate=2013-11-09 |deadurl=yes |archiveurl=https://web.archive.org/web/20130717171434/http://www.spca.bc.ca/assets/documents/welfare/professional-resources/farmer-resources/diatomaceous-earth-factsheet.pdf |archivedate=July 17, 2013 |df=mdy-all }} In a study of workers, those exposed to natural D.E. for over 5 years had no significant lung changes, while 40% of those exposed to the calcined form had developed [[pneumoconiosis]].https://www.cdc.gov/niosh/docs/81-123/pdfs/0552.pdf Today's common D.E. formulations are safer to use as they are predominantly made up of amorphous silica and contain little or no crystalline silica.     − The crystalline silica content of D.E. is regulated in the United States by the [[Occupational Safety and Health Administration]] (OSHA), and there are guidelines from the [[National Institute for Occupational Safety and Health]] setting maximum amounts allowable in the product (1%) and in the air near the breathing zone of workers, with a [[recommended exposure limit]] at 6 mg/m3 over an 8-hour workday.[http://www.oznet.ksu.edu/grsc_subi/Teaching/GRSC651/GRSC651_Courses_Material/lecture_slides/GRSC651_lect_20(1)_Inert_Dusts.pdf Inert Dusts] at [[Kansas State University]] OSHA has set a [[permissible exposure limit]] for diatomaceous earth as 20 mppcf (80 mg/m3/%SiO2). At levels of 3000 mg/m3, diatomaceous earth is immediately dangerous to life and health.{{Cite web|title = CDC - NIOSH Pocket Guide to Chemical Hazards - Silica, amorphous|url = https://www.cdc.gov/niosh/npg/npgd0552.html|website = www.cdc.gov|accessdate = 2015-11-21}} + The crystalline silica content of D.E. is regulated in the United States by the [[Occupational Safety and Health Administration]] (OSHA), and there are guidelines from the [[National Institute for Occupational Safety and Health]] setting maximum amounts allowable in the product (1%) and in the air near the breathing zone of workers, with a [...]



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 === [...]