| Revision as of 23:39, 17 May 2011 editRjwilmsiBot (talk | contribs)Bots, Pending changes reviewers1,602,950 editsm →External links: Fix cite template param names, vol -> volume, using AWB (7701)← Previous edit |
Latest revision as of 11:35, 5 March 2024 edit undoMaxim Masiutin (talk | contribs)Extended confirmed users, IP block exemptions, Pending changes reviewers30,619 edits Altered issn. | Use this tool. Report bugs. | #UCB_Gadget |
| (13 intermediate revisions by 12 users not shown) |
| Line 1: |
Line 1: |
|
{{Refimprove|date=September 2010}} |
|
|
{{Chembox |
|
{{Chembox |
|
| verifiedrevid = 387574576 |
|
| verifiedrevid = 429643136 |
|
| Reference = |
|
| Reference = |
|
| OtherNames = |
|
| OtherNames = |
|
| ImageFile1 = |
|
| ImageFile1 = |
|
| ImageSize1 = |
|
| ImageSize1 = |
|
| Section1 = {{Chembox Identifiers |
|
|Section1={{Chembox Identifiers |
|
|
| CASNo_Ref = {{cascite|correct|??}} |
|
| CASNo = 96949-22-3 |
|
| CASNo = 96949-22-3 |
|
|
| EINECS = 619-250-2 |
|
}} |
|
}} |
|
| Section2 = {{Chembox Properties |
|
|Section2={{Chembox Properties |
|
| Formula = |
|
| Formula = |
|
| Density = 26.25 lbs/ft³ (bulk) |
|
| Density = 26.25 lbs/ft³ (bulk) |
|
| Appearance = white to cream colored powder |
|
| Appearance = white to cream colored powder |
|
}} |
|
}} |
|
| Section7 = {{Chembox Hazards |
|
|Section7={{Chembox Hazards |
|
| ExternalMSDS = |
|
| ExternalSDS = |
|
| NFPA-H = 1 |
|
| NFPA-H = 1 |
|
| NFPA-F = 1 |
|
| NFPA-F = 1 |
|
| NFPA-R = 0 |
|
| NFPA-R = 0 |
|
|
|
|
| RPhrases = |
|
|
| SPhrases = |
|
|
}} |
|
}} |
|
}} |
|
}} |
|
|
|
|
|
'''Welan gum''' is an ] used as a ] modifier in industrial applications such as cement manufacturing.<ref>{{cite patent |country=US|number=5004506|status=patent| title = Welan gum in cement compositions | gdate =2 April 1991 | inventor1 = Allen, Floyd L. |inventor2=Best, Glen H. |inventor3=Lindroth, Thomas A. | assign1 = Merck & Co., Inc. | class = 106/729, 106/730, 106/804, 106/819, 106/823}}</ref> It is produced by ] of sugar by bacteria of the genus '']''. The molecule consists of repeating tetrasaccharide units with single branches of L-mannose or L-rhamnose. In solution, the gum exhibits viscosity retention at elevated temperature, and is stable in a wide pH range, in the presence of calcium ion, and with high concentration of glycols.<ref>{{Cite web|url=http://www.cpkelco.com/products-welan-gum.html |title=CP Kelco Welan Gum |
|
'''Welan gum''' is an ] used as a ] modifier in industrial applications such as cement manufacturing.<ref>{{cite patent |country=US|number=5004506|status=patent| title = Welan gum in cement compositions | gdate =2 April 1991 | inventor = Allen, Floyd L. |inventor2=Best, Glen H. |inventor3=Lindroth, Thomas A. | assign1 = Merck & Co., Inc.}}</ref> It is produced by ] of sugar by bacteria of the genus '']''. The molecule consists of repeating tetrasaccharide units with single branches of ] or ].<ref name="KaurBera2014">{{cite journal|last1=Kaur|first1=Varinder|last2=Bera|first2=Manav B.|last3=Panesar|first3=Parmjit S.|last4=Kumar|first4=Harish|last5=Kennedy|first5=J.F.|title=Welan gum: Microbial production, characterization, and applications|journal=International Journal of Biological Macromolecules|volume=65|year=2014|pages=454–461|issn=0141-8130|doi=10.1016/j.ijbiomac.2014.01.061|pmid=24508918}}</ref> In solution, the gum retains viscosity at elevated temperature, and is stable in a wide pH range, in the presence of calcium ion, and with high concentration of glycols.<ref>{{Cite web|url=http://www.cpkelco.com/products-welan-gum.html |title=CP Kelco Welan Gum |
|
|publisher=CP Kelco |accessdate=17 Sept 2010 }}</ref><ref>{{Cite web|url=http://www.colltec.de/Home_english/Welan_Gum/welan_gum.html |title=Welan gum |publisher=Colltec |accessdate=17 Sept 2010}}</ref><ref>{{Cite web|url=http://www.welangum.com/ |title=Welan gum |publisher=Fritz Industries |accessdate= 17 Sept 2010}}</ref> |
|
| publisher=CP Kelco |accessdate=17 Sep 2010 }}</ref><ref>{{Cite web|url=http://www.colltec.de/Home_english/Welan_Gum/welan_gum.html |title=Welan gum |publisher=Colltec |accessdate=17 Sep 2010}}</ref><ref>{{Cite web|url=http://www.welangum.com/ |title=Welan gum |publisher=Fritz Industries |accessdate= 17 Sep 2010}}</ref> |
|
|
|
|
|
==See also== |
|
==See also== |
| Line 32: |
Line 32: |
|
|
|
|
|
==References== |
|
==References== |
|
{{Reflist|2}} |
|
{{Reflist}} |
|
|
|
|
|
==External links== |
|
==External links== |
|
*{{Cite journal|url=http://media.iupac.org/publications/pac/1989/pdf/6107x1315.pdf |title=Industrial polysaccharides |journal=Pure and Applied Chemistry |volume=61 |issue=7 |pages=1315–1322 |year=1989 |author=Dea, Ian C M}} |
|
*{{Cite journal|url=http://media.iupac.org/publications/pac/1989/pdf/6107x1315.pdf |title=Industrial polysaccharides |journal=Pure and Applied Chemistry |volume=61 |issue=7 |pages=1315–1322 |year=1989 |author=Dea, Ian C M |doi=10.1351/pac198961071315|s2cid=195819313 }} |
|
|
|
| ⚫ |
{{Chem-stub}} |
|
|
|
|
|
|
] |
|
] |
|
] |
|
] |
|
|
|
|
|
|
|
⚫ |
{{organic-chem-stub}} |