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Sodium chloride

anhydrous, Redi-Dri, free-flowing, ACS reagent, ≥99%

Halite, NaCl
Linear Formula:
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


ACS reagent

vapor pressure

1.33 hPa ( 865 °C)

product line









≤0.005% Insoluble matter


5.0-9.0 (25 °C, 5% in solution)


801 °C (lit.)

anion traces

bromide (Br-): ≤0.01%
chlorate, nitrate (as NO3-): ≤0.003%
iodide (I-): ≤0.002%
phosphate (PO43-): ≤5 ppm
sulfate (SO42-): ≤0.004%

cation traces

Ba:, passes test
Ca: ≤0.002%
Fe: ≤2 ppm
K: ≤0.005%
Mg: ≤0.001%
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string




InChI key


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General description

Solid sodium chloride has a melting point of 801 °C.


Sodium chloride has been used for the preparation of tris buffered saline, phosphate buffered saline, MPM-2 (mitotic protein monoclonal-2) cell lysis buffer, immunoprecipitation wash buffer, LB (Luria-Bertani) media and dialysis buffer.


1, 2.5 kg in poly bottle
500 g in poly bottle
5, 12, 25 kg in poly drum

Features and Benefits

  • Increased efficiency – Eliminate time and effort of loosening hardened powders
  • Safety – Avoid risks of using tools of force to break up clumps
  • Economy – Faster preparation and solvation increase productivity and reduce costs
  • Assured quality – Excellent, expert-tested quality with no anti-caking agents
  • Flexible volumes – Available from research amounts to scale-up quantities

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Aaron S Schwartz-Duval et al.
Nature communications, 11(1), 4530-4530 (2020-09-12)
Various cancer cells have been demonstrated to have the capacity to form plasmonic gold nanoparticles when chloroauric acid is introduced to their cellular microenvironment. But their biomedical applications are limited, particularly considering the millimolar concentrations and longer incubation period of...
Jinbo Cheng et al.
Autophagy, 16(12), 2193-2205 (2020-02-01)
Microglial activation-induced neuroinflammation is closely associated with the development of Parkinson disease (PD). Macroautophagy/autophagy regulates many biological processes, but the role of autophagy in microglial activation during PD development remains largely unclear. In this study, we showed that deletion of...
Islem Gandouzi et al.
Materials (Basel, Switzerland), 12(7) (2019-04-14)
Pyoverdine is a fluorescent siderophore produced by Pseudomonas aeruginosa that can be considered as a detectable marker in nosocomial infections. The presence of pyoverdine in water can be directly linked to the presence of the P. aeruginosa, thus being a...
Anneleen Remmerie et al.
Immunity, 53(3), 641-657 (2020-09-06)
Metabolic-associated fatty liver disease (MAFLD) represents a spectrum of disease states ranging from simple steatosis to non-alcoholic steatohepatitis (NASH). Hepatic macrophages, specifically Kupffer cells (KCs), are suggested to play important roles in the pathogenesis of MAFLD through their activation, although...
Johnny Bonnardel et al.
Immunity, 51(4), 638-654 (2019-09-29)
Macrophages are strongly adapted to their tissue of residence. Yet, little is known about the cell-cell interactions that imprint the tissue-specific identities of macrophages in their respective niches. Using conditional depletion of liver Kupffer cells, we traced the developmental stages...


Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.


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