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B9876 Sigma-Aldrich

Sodium tetraborate decahydrate

ReagentPlus®, ≥99.5%

Synonym: Borax decahydrate, Sodium borate decahydrate



Related Categories Essential Chemicals, Research Essentials, Salts, Sodium Salts
grade   ReagentPlus®
assay   ≥99.5%
density   1.73 g/mL at 25 °C(lit.)



Widely used as a buffer. pH of a solution is approx. 9.3 over a wide range of concentrations.

Other Notes

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.


1 kg in poly bottle

5 kg in poly drum

500 g in poly bottle

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Price and Availability

Suggested Laboratory Gloves

Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.

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Sodium tetraborate decahydrate

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Safety & Documentation

Safety Information

GHS08  GHS08
Signal word 
Hazard statements 
Precautionary statements 
WGK Germany 

Protocols & Articles

Peer-Reviewed Papers


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[The influence of fluoride on expression of OPGL and M-CSF genes and their proteins in rats with experimental fluorosis and the therapeutic effect of Danlan Xianpeng Liaofu caspule]. Sun XJ, Yu YN, and Xiao YM Zhonghua Bing Li Xue Za Zhi 39(10), 695-700, (2010)


Polysaccharide-based hydrogels: preparation, characterization, and drug interaction behaviour. Vieira EF, Cestari AR, Airoldi C, et al. Biomacromolecules 9(4), 1195-9, (2008)


Preparation and characterization of antimicrobial wound dressings based on silver, gellan, PVA and borax. Cencetti C, Bellini D, Pavesio A, et al. Carbohydr. Polym. 90(3), 1362-70, (2012)


Reproductive toxicity parameters and biological monitoring in occupationally and environmentally boron-exposed persons in Bandirma, Turkey. Duydu Y, Başaran N, Üstündağ A, et al. Arch. Toxicol. 85(6), 589-600, (2011)


Photonic crystal borax competitive binding carbohydrate sensing motif. Cui Q, Ward Muscatello MM, and Asher SA Analyst 134(5), 875-80, (2009)


Effects of boric acid and borax on titanium dioxide genotoxicity. Turkez H J. Appl. Toxicol. 28(5), 658-64, (2008)


Borax mediated layer-by-layer self-assembly of neutral poly(vinyl alcohol) and chitosan. Manna U and Patil S J. Phys. Chem. B 113(27), 9137-42, (2009)


Fast and interference-free determination of glyphosate and glufosinate residues through electrophoresis in disposable microfluidic chips. Wei X, Gao X, Zhao L, et al. J. Chromatogr. A. 1281, 148-54, (2013)


Comparison of treatments to inactivate viral hemorrhagic septicemia virus (VHSV-IVb) in frozen baitfish. Phelps NB, Goodwin AE, Marecaux E, et al. Dis. Aquat. Organ. 102(3), 211-6, (2013)


Determination of fumaric and maleic acids with stacking analytes by transient moving chemical reaction boundary method in capillary electrophoresis. He JF, Yang WY, Yao FJ, et al. J. Chromatogr. A. 1218(24), 3816-21, (2011)


The effects of dietary boric acid and borax supplementation on lipid peroxidation, antioxidant activity, and DNA damage in rats. Ince S, Kucukkurt I, Cigerci IH, et al. J. Trace Elem. Med. Biol. 24(3), 161-4, (2010)


Scleroglucan-borax hydrogel: a flexible tool for redox protein immobilization. Frasconi M, Rea S, Matricardi P, et al. Langmuir 25(18), 11097-104, (2009)


Ameliorative effects of boron on serum profile in buffalo (Bubalus bubalis) fed high fluoride ration. Bharti VK, Gupta M, and Lall D Trop. Anim. Health Prod. 40(2), 111-6, (2008)


Guar gum and scleroglucan interactions with borax: experimental and theoretical studies of an unexpected similarity. Bocchinfuso G, Mazzuca C, Sandolo C, et al. J. Phys. Chem. B 114(41), 13059-68, (2010)


Asymmetrical behavioral response towards two boron toxicants depends on the ant species (Hymenoptera: Formicidae). Sola F, Falibene A, and Josens R J. Econ. Entomol. 106(2), 929-38, (2013)


Structure elucidation and properties of a non-ionic galactomannan derived from the Cassia pleurocarpa seeds. Singh V, Sethi R, and Tiwari A Int. J. Biol. Macromol. 44(1), 9-13, (2009)


Dynamics of pH modification of an acidic protein bait used for tropical fruit flies (Diptera: Tephritidae). Heath RR, Vazquez A, Schnell EQ, et al. J. Econ. Entomol. 102(6), 2371-6, (2009)


Evaluation of rheological properties and swelling behaviour of sonicated scleroglucan samples. Ansari SA, Matricardi P, Meo CD, et al. Molecules 17(3), 2283-97, (2012)


Effects of some boron compounds on peripheral human blood. Türkez H, Geyikoğlu F, Tatar A, et al. Z. Naturforsch., C, J. Biosci. 62(11-12), 889-96, (2007)


Secondary relaxations in supercooled and glassy sucrose-borate aqueous solutions. Longinotti MP, Corti HR, and Pablo JJ Carbohydr. Res. 343(15), 2650-6, (2008)


Enhancing fluorescence intensity of Ellagic acid in Borax-HCl-CTAB micelles. Wang F, Huang W, Zhang S, et al. Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 78(3), 1013-7, (2011)


Toxicity detection of sodium nitrite, borax and aluminum potassium sulfate using electrochemical method. Yu D, Yong D, and Dong S J. Environ. Sci. (China) 25(4), 785-90, (2013)


Determination of phenolic disinfectants in consumer products by capillary electrophoresis with amperometric detection. Jiang L, Wang J, He Y, et al. J. Chromatogr. Sci. 48(7), 584-8, (2010)


Optimization of a histopathological biomarker for sphingomyelin accumulation in acid sphingomyelinase deficiency. Taksir TV, Johnson J, Maloney CL, et al. J. Histochem. Cytochem. 60(8), 620-9, (2012)


Genotoxic effects of borax on cultured lymphocytes. Pongsavee M Southeast Asian J. Trop. Med. Public Health 40(2), 411-8, (2009)


Merck 14,8590

Corp MSDS 1 (2), 3155:C / RegBook 1 (3), 3391:G / Sax 6, 2414 / Sigma FT-IR 1 (2), 1016:C

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