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221465

Sodium hydroxide

Name: Sodium hydroxide
Brand: SIGALD

ACS reagent, ≥97.0%, pellets

Synonym(s):

Caustic soda

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About This Item

Linear Formula:

NaOH

CAS Number:

1310-73-2

Molecular Weight:

40.00

NACRES:

NA.21

PubChem Substance ID:

329752270

UNSPSC Code:

12352302

EC Number:

215-185-5

MDL number:

MFCD00003548

Assay:

≥97.0%

Form:

pellets

Grade:

ACS reagent

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Properties

grade

ACS reagent

Quality Level

200

agency

suitable for DIN 38407-42, suitable for EPA 1621, suitable for EPA 533, suitable for EPA 8327, suitable for EPA OTM-45, suitable for SM 4500 - NH3

vapor density

>1 (vs air)

vapor pressure

<18 mmHg ( 20 °C), 3 mmHg ( 37 °C)

assay

≥97.0%

form

pellets

technique(s)

cell culture | mammalian: suitable, titration: suitable

impurities

≤0.001% N compounds, ≤0.02% NH₄OH ppt., ≤1.0% Na₂CO₃

pH

(ca.> 14 at 100 g/l at 20 °C)

mp

318 °C (lit.)

solubility

water: soluble 1,260 g/L at 20 °C

density

2.13 g/cm³ at 20 °C

anion traces

chloride (Cl^-): ≤0.005%, phosphate (PO₄^3-): ≤0.001%, sulfate (SO₄^2-): ≤0.003%

cation traces

Fe: ≤0.001%, Hg: ≤0.1 ppm, K: ≤0.02%, Ni: ≤0.001%, heavy metals (as Ag): ≤0.002%

application(s)

PFAS testing

SMILES string

[OH-].[Na+]

InChI

1S/Na.H2O/h;1H2/q+1;/p-1

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

Description

General description

Sodium hydroxide (NaOH) also known as caustic soda is a water soluble inorganic base with a wide range of industrial application such as titration, dissolution testing and in impinger to remove acidic gases. It participates in the oxidation of glycerol catalyzed by Au/charcoal or Au/graphite. It participates in solvent-free aldol condensation reaction.

Application

Sodium hydroxide (NaOH) was used in the following processes:

Preparation of sodium 3,3′-bis(sulfonato)-4,4′-bis(chloroacetamido)azobenzene (BSBCA) that is utilized in protein cross-linking techniques.
Preparation of electrolyte solution to study the effect of electrolyte composition on the conversion of CO₂ to CO by electrochemical reduction.
Preparation of CSK (cytoskeleton) buffer for the three-dimensional (3D) slide method of preserving the 3D chromatin structure of testicular germ cells.
Synthesis of ZSMs (zeolite socony mobils).

Sodium hydroxide may be employed for the deterimination of specific surface area of colloidal silica, via titration. It may be employed for the direct oxidation of sodium borohydride, which was investigated by cyclic and linear voltammetry, chronoamperometry and chronopotentiometry. It may be used to prepare citrate buffer and borate buffer. It may be used in the synthesis of :

alkylaryl amidosulfobetaines
(3 -[4-teroctylphenoxyethoxyethoxyethyl] dimethylammonio propane sulfonate (XOSB)
trisulfobetaines (TriSBn)

Sodium hydroxide may be used as a base in titration methods, dissolution testing, for adjusting pH and in the impinger to remove acidic gases.
It may be used in the following processes:

Conversion of glycerol to glyceric acid in the presence of gold catalyst.
Palladium-catalyzed cross-coupling reaction between vinylalkoxysilanes and aryl bromides or chlorides to form styrenes.

Other Notes

Go to Redi-Dri^™ Product Listing 795429

Legal Information

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

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pictograms

GHS05

signalword

Danger

hcodes

H290,H314

pcodes

P234 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Storage Class

8B - Non-combustible corrosive hazardous materials

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

危险化学品

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Global Trade Item Number

SKU	GTIN
553425-1G	04061837010521
221465-12KG	04061838777348
221465-1KG	04061835561711
221465-2.5KG	04061837733840
221465-25G	04061837733857
221465-25KG	04061838084040
221465-500G	04061837733864
221465-50KG	04061833636534
221465-6X500G	04061837733871