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Merck
CN

71690

Sodium hydroxide

puriss. p.a., ACS reagent, K ≤0.02%, ≥98.0% (T), pellets

Synonym(s):

Caustic soda

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About This Item

Linear Formula:
NaOH
CAS Number:
Molecular Weight:
40.00
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
215-185-5
MDL number:
Assay:
≥98.0% (T)
Form:
pellets
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Quality Level

vapor density

>1 (vs air)

vapor pressure

<18 mmHg ( 20 °C), 3 mmHg ( 37 °C)

grade

ACS reagent, puriss. p.a.

assay

≥98.0% (T)

form

pellets

technique(s)

cell culture | plant: suitable

impurities

≤0.0003% total nitrogen (N), ≤0.0005% silicon dioxide (SiO2), ≤1.0% sodium carbonate (Na2CO3)

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-): ≤10 mg/kg, phosphate (PO43-): ≤5 mg/kg, sulfate (SO42-): ≤5 mg/kg

SMILES string

[OH-].[Na+]

cation traces

Ag: ≤5 mg/kg, Al: ≤5 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤5 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Hg: ≤0.1 mg/kg, K: ≤200 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Tl: ≤5 mg/kg, Zn: ≤5 mg/kg

InChI

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

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

General description

Sodium hydroxide (NaOH) is an inorganic base. It participates in the oxidation of glycerol catalyzed by Au/charcoal or Au/graphite. It also participates in solvent-free aldol condensation reaction.

Application

Sodium hydroxide 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 compose citrate buffer and borate buffers.
It may be used in the synthesis of following compounds:
  • alkylaryl amidosulfobetaines
  • (3-[ 4-teroctylphenoxyethoxyethoxyethyl] dimethylammonio propane sulfonate (XOSB)
  • trisulfobetaines (TriSBn)

Other Notes

Reagent for the decomposition of silicates by fusion.


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pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

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

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

危险化学品

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Z. Sulcek et al.
Methods of Decomposition in Inorganic Analysis (1989)
R. Bock
Aufschlussmethoden der anorg. & org. Chemie (1972)
Chemoselective, solvent-free aldol condensation reaction.
Raston CL and Scott JL.
Green Chemistry, 2(2), 49-52 (2000)



Global Trade Item Number

SKUGTIN
71690-500G04061832850542
71690-1KG04061832850498
71690-5KG04061832850566
71690-60KG04061833692974