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06203-M

Sigma-Aldrich

Sodium hydroxide

puriss., meets analytical specification of Ph. Eur., BP, NF, E524, ≥98.0%, pellets

Synonym(s):

‘Caustic soda’

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About This Item

Linear Formula:
NaOH
CAS Number:
1310-73-2
Molecular Weight:
40.00
EC Number:
215-185-5
MDL number:
MFCD00003548
UNSPSC Code:
12352302
PubChem Substance ID:
329748217

vapor density

>1 (vs air)

vapor pressure

<18 mmHg ( 20 °C)
3 mmHg ( 37 °C)

grade

puriss.

Assay

≥98.0%

form

pellets

quality

meets analytical specification of Ph. Eur., BP, NF, E524

impurities

residual solvents, complies
≤0.0005% total nitrogen (N)
≤0.5% Na2CO3
≤20 ppm heavy metals (as Pb)

mp

318 °C (lit.)

solubility

water: soluble 1260 g/L at 20 °C

anion traces

chloride (Cl-): ≤20 ppm
phosphate (PO43-): ≤0.001%
silicate (as SiO2): ≤0.01%
sulfate (SO42-): ≤30 ppm

cation traces

Al: ≤0.001%
As: ≤2 ppm
Ca: ≤0.001%
Fe: ≤10 ppm
Hg: ≤1 ppm
K: ≤0.1%
Pb: ≤0.5 ppm

suitability

complies for appearance of solution

SMILES string

[OH-].[Na+]

InChI

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

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

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Other Notes

Important notice
This product will be phased out towards early 2019. There is a replacement product available : 06203

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H290 - H314

Hazard Classifications

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

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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