氢氧化钠

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

InChI

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

SMILES string

[OH-].[Na+]

vapor density

>1 (vs air)

vapor pressure

<18 mmHg ( 20 °C), 3 mmHg ( 37 °C)

product line

BioUltra

assay

≥98.0% (T)

form

pellets

Quality Level

100

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 (PO₄^3-): ≤5 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg

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 A_max: 0.015, λ: 280 nm A_max: 0.01

suitability

in accordance for luminescence, suitable for luminescence