339253

Hydrochloric acid

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

• 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

Properties

• vapor density: 1.3 (vs air); 1.3 (vs air)
• Quality Level: 100
• 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: 1.2 g/mL at 25 °C (lit.)
• SMILES string: Cl
• InChI: 1S/ClH/h1H
• InChI key: VEXZGXHMUGYJMC-UHFFFAOYSA-N

Description

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.

Safety Information

• Pictograms: GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H290 - H314 - H335
• Precautionary Statements: P234 - P261 - P271 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• 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