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Merck

71687

Hydroxyde de sodium

BioUltra, suitable for luminescence, ≥98.0% (T), pellets

Synonyme(s) :

"Soude caustique"

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A propos de cet article

Formule linéaire :
NaOH
Numéro CAS:
Poids moléculaire :
40.00
NACRES:
NA.32
PubChem Substance ID:
UNSPSC Code:
12352316
EC Number:
215-185-5
MDL number:
Assay:
≥98.0% (T)
Concentration:
80-100 % (w/w) (sodium hydroxide)
Form:
pellets
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vapor density

>1 (vs air)

Quality Level

vapor pressure

<18 mmHg ( 20 °C), 3 mmHg ( 37 °C)

product line

BioUltra

assay

≥98.0% (T)

form

pellets

mol wt

40.00 g/mol

concentration

80-100 % (w/w) (sodium hydroxide)

technique(s)

cell culture | mammalian: suitable

impurities

insoluble matter, passes filter test, ≤0.0003% total nitrogen (N), ≤0.0005% silicon dioxide (SiO2), ≤1.0% sodium carbonate (Na2CO3)

color

clear colorless

pH

>14 (20 °C, 100 g/L)

bp

1,390 °C/1,013 hPa

mp

318 °C (lit.)

solubility

H2O: 1 M at 20 °C, clear, colorless

density

2.13 g/cm3

anion traces

chloride (Cl-): ≤70 mg/kg, phosphate (PO43-): ≤5 mg/kg, sulfate (SO42-): ≤50 mg/kg

SMILES string

[OH-].[Na+]

cation traces

Ag: ≤5 mg/kg, Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 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: ≤500 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, Zn: ≤5 mg/kg

λ

1 M in H2O

UV absorption

λ: 260 nm Amax: 0.015, λ: 280 nm Amax: 0.01

suitability

in accordance for luminescence, suitable for luminescence

InChI

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

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

General description

Sodium Hydroxide, also known as caustic soda or lye, is a white crystalline odorless solid which is corrosive and absorbs moisture from the air. When dissolved in water, Sodium Hydroxide generates heat to ignite combustible materials. In the form of pellets, Sodium Hydroxide, when dissolved, forms a colorless liquid, denser than water.

Application

Sodium Hydroxide is generally used in the solid or 50% solution form. It is suitable for use at various stages of soaps, paper, rayon, and petroleum product manufacturing. It is also used in carbohydrate research using FTIR analysis. Sodium Hydroxide is used as a pre-treatment reagent to study enzymatic hydrolysis.


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pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

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

Classe de stockage

8B - Non-combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges



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Ziyu Wang et al.
Bioresource technology, 101(10), 3583-3585 (2010-01-22)
Coastal Bermuda grass was pretreated with NaOH at concentrations from 0.5% to 3% (w/v) for a residence time from 15 to 90min at 121 degrees C. The pretreatments were evaluated based on total lignin removal and production of total reducing
Sang Youn Oh et al.
Carbohydrate research, 340(3), 417-428 (2005-02-01)
Cellulose samples treated with sodium hydroxide (NaOH) and carbon dioxide in dimethylacetamide (DMAc) were analyzed by FTIR spectroscopy. Absorbance of hydrogen-bonded OH stretching was considerably decreased by the treatment of NaOH and carbon dioxide. The relative absorbance ratio (A(4000-2995)/A(993)) represented
Konstantinos A Polyzos et al.
Cardiovascular research, 106(2), 295-302 (2015-03-10)
Atherosclerosis is a chronic inflammatory disease that is initiated by the retention and accumulation of low-density lipoprotein in the artery, leading to maladaptive response of cells from the immune system and vessel wall. Strong evidence implicates indoleamine 2,3-dioxygenase (IDO), the