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A white solid oligomer of formaldehyde, (CH2O)n, where n is at least 6, used as a disinfectant, fumigant, and fungicide.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌpærəfɔːˈmældɪˌhaɪd) or


(Elements & Compounds) a white amorphous solid polymeric form of formaldehyde: used as a convenient source of formaldehyde and as a fumigant. Formula: (CH2O)n, where n lies between 6 and 50
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌpær ə fɔrˈmæl dəˌhaɪd, -fər-)

a white, crystalline polymer of formaldehyde, (HCOH)n, used chiefly as an antiseptic. Also called par′a•form` (-ˌfɔrm)
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
IGM was fixed in 30% paraform for 1 h and precipitated with a solution of 15% sucrose.
The samples were washed in 0.9% saline, fixed in Paraform (40 g/L), embedded in paraffin, and microtome sections were obtained.
A 1cm section of fresh colon tissues were fixed in 4% paraform for 12 h, then dehydrated in 50%, 60%, 70%, 80%, 90%, and 100% alcohol separately, and embedded in paraffin at 5660[degrees]C.
Once all rats were sacrificed, the hearts were washed with PBS and dried to weigh and fixed within 4% paraform overnight.
1-508 Indian Chemical Industries (ICI) 7-644 INEOS Melamines GmbH 1-650 INEOS Paraform GmbH & Co.
The polyfunctional crosslinking agent is formaldehyde, paraform, or trioxane.
The raw material of bonding agents, such as paraform, polymerization of formaldehyde.
5-Methylresorcinol of purity [greater than or equal to] 96% was obtained from Carboshale, Estonia; Honeyol[TM] which is a product of Viru Keemia Grupp, Estonia, was obtained from Department of Oil Shale Technology of Tallinn University of Technology; the catalysts were [Na.sub.2]C[O.sub.3] (purity 99.8%) from Sigma Aldrich Laborchemikalien GmbH, Germany, and KOH from Chemapol Lachema Brno, Czech Republic; formaldehyde was in the form of 35% solution in water, obtained by dissolving paraform in distilled water, when paraform (purity 95%) was from Sigma Aldrich Laborchemikalien GmbH, Germany.
Brands: Paratherm, Paraskin, Paramoll, Paraprint, Parabond, Paradur, Parafil, Paraform