655104

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Sodium hydroxide

reagent grade, 97%, powder

All Photos(3)

Synonym(s):

‘Caustic soda’

Linear Formula:

NaOH

CAS Number:

1310-73-2

Molecular Weight:

40.00

EC Number:

215-185-5

MDL number:

MFCD00003548

PubChem Substance ID:

329760067

NACRES:

NA.21

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grade

reagent grade

Quality Level

200

vapor density

>1 (vs air)

vapor pressure

<18 mmHg ( 20 °C)
3 mmHg ( 37 °C)

Assay

97%

form

powder

technique(s)

cell culture | mammalian: suitable

mp

318 °C (lit.)

solubility

water: soluble 1260 g/L at 20 °C

density

2.13 g/cm³ at 20 °C

SMILES string

[OH-].[Na+]

InChI

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

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

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This Item	1.06467	1.06469	1.06462
Sigma-Aldrich 655104 Sodium hydroxide	Supelco 1.06467 Sodium hydroxide	Supelco 1.06469 Sodium hydroxide	Supelco 1.06462 Sodium hydroxide
grade reagent grade	grade -	grade ACS reagent	grade -
vapor density >1 (vs air)	vapor density >1 (vs air)	vapor density >1 (vs air)	vapor density >1 (vs air)
vapor pressure <18 mmHg ( 20 °C), 3 mmHg ( 37 °C)	vapor pressure <18 mmHg ( 20 °C), 3 mmHg ( 37 °C)	vapor pressure <18 mmHg ( 20 °C), 3 mmHg ( 37 °C)	vapor pressure <18 mmHg ( 20 °C), 3 mmHg ( 37 °C)
assay 97%	assay ≥99% NaOH basis (acidimetric)	assay 99-100% (total alkilinity calculated as NaOH)	assay ≥97% (NaOH, acidimetric)
form powder	form granular	form pellets	form pellets
mp 318 °C (lit.)	mp 318 °C (lit.)	mp 318 °C (lit.)	mp 318 °C (lit.)

General description

Sodium hydroxide, also known as lye and caustic soda, is a strong base used universally as a neutralization agent in the chemical industry, paper making, petroleum refining, cleaning compounds, and drain cleaners.

Application

Sodium hydroxide can be used as:

A reagent in the gold-catalyzed selective oxidation of glycerol to glyceric acid.
A catalyst for the cross-dehydrogenative coupling of alcohols and hydrosilanes to synthesize silyl ethers.
A base in the Sonogashira-type coupling of aryl halides and alkynes to synthesize ynones.

Pictograms

GHS05

Signal Word

Danger

Hazard Statements

H290 - H314

Precautionary Statements

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 Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)