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Sigma-Aldrich

Hydrochloric acid

37 wt. % in H2O, 99.999% trace metals basis

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About This Item

Empirical Formula (Hill Notation):
HCl
CAS Number:
7647-01-0
Molecular Weight:
36.46
Beilstein:
1098214
EC Number:
231-595-7
MDL number:
MFCD00011324
UNSPSC Code:
12352106
PubChem Substance ID:
329754537
NACRES:
NA.21

vapor density

1.3 (vs air)
1.3 (vs air)

vapor pressure

3.23 psi ( 21.1 °C)
7.93 psi ( 37.7 °C)

Assay

99.999% trace metals basis

form

liquid

concentration

37 wt. % in H2O

color

light yellow

bp

>100 °C (lit.)

density

1.070 g/cm3 at 20 °C (lit.)

SMILES string

Cl

InChI

1S/ClH/h1H

InChI key

VEXZGXHMUGYJMC-UHFFFAOYSA-N

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General description

Hydrochloric acid is a strong mineral acid. Adsorption of Fe(III) by Dowex-1 anion exchange resin using various concentrations of HCl solutions has been studied.

Application

Hydrochloric acid may be used in the following studies:
  • Membrane assisted solvent extraction (MSX) of rare earth elements (such as neodymium, praseodymium, and dysprosium) from NdFeB magnets and industrial scrap magnets.
  • Preparation of orcinolhydrochloric acid (Bial′s reagent), which is useful for the quantitative determination of sialic acids.
  • Preparation of alcoholic hydrochloric acid-carmine stain.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H290,H314,H335

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B - STOT SE 3

Target Organs

Respiratory system

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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Alcoholic hydrochloric acid-carmine as a stain for chromosomes in squash preparations.
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ADSORPTION OF IRON BY ANION EXCHANGE RESINS FROM HYDROCHLORIC ACID SOLUTIONS1.
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Journal of the American Chemical Society, 72(12), 5792-5793 (1950)
Quantitative estimation of sialic acids. II. A colorimetric resorcinol-hydrochloric acid method.
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The rare earth elements (REEs) such as neodymium, praseodymium, and dysprosium were successfully recovered from commercial NdFeB magnets and industrial scrap magnets via membrane assisted solvent extraction (MSX). A hollow fiber membrane system was evaluated to extract REEs in a
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