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Merck
CN

40253

Sigma-Aldrich

Hydrochloric acid

fuming 37%, 37-38%

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About This Item

Empirical Formula (Hill Notation):
HCl
CAS Number:
Molecular Weight:
36.46
Beilstein:
1098214
EC Number:
MDL number:
UNSPSC Code:
12352301
PubChem Substance ID:
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vapor density

1.3 (vs air)

vapor pressure

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

Assay

37-38%

CofA

specification on request

concentration

30-50%

color

light yellow

bp

>100 °C (lit.)

solubility

H2O: soluble

density

1.18 g/mL at 20 °C

SMILES string

Cl

InChI

1S/ClH/h1H

InChI key

VEXZGXHMUGYJMC-UHFFFAOYSA-N

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General description

Semiconductor grade hydrochloric acid has been characterized by inductively couple plasma mass spectrometry (ICP-MS). The trace detection of V, Cr, As and Se in 20% HCl was determined in the study. It′s efficiency as a microabrasive was studied.

Application

Hydrochloric acid may be used in the formulation of “standard cleaning bath” to purify metallurgical grade silicon (MGS) and polysilicon. Varying concentrations of the acid aided formation of spherical and rod like cellulose nanocrystals. Aqueous mixture of hydrochloric acid and Α-hydroxy acids (lactic, citric, malic, and tartaric acids) may be used to etch a III-V semiconductor (InP).

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Analysis of semiconductor-grade HCl with the ELAN DRC ICP-MS: elimination of chloride-based interferences.
Kishi Y and Kawabata K
Atomic Spectroscopy, 23(5), 165-169 (2002)
Electrochemical properties of metallurgical-grade silicon in hydrochloric acid.
Kareh KA
Electrochimica Acta, 54(26), 6548-6553 (2009)
Semiconductor Surface-Molecule Interactions, Wet etching of InP by ?-hydroxy acids
Bandaru P and Yablonovitch E
Journal of the Electrochemical Society, 149, G599-G602 (2002)
Brian W Simons et al.
The Journal of pathology, 235(3), 478-489 (2014-10-29)
Inflammation is associated with several diseases of the prostate including benign enlargement and cancer, but a causal relationship has not been established. Our objective was to characterize the prostate inflammatory microenvironment after infection with a human prostate-derived bacterial strain and
Aparajita H Chourasia et al.
EMBO reports, 16(9), 1145-1163 (2015-08-02)
BNip3 is a hypoxia-inducible protein that targets mitochondria for autophagosomal degradation. We report a novel tumor suppressor role for BNip3 in a clinically relevant mouse model of mammary tumorigenesis. BNip3 delays primary mammary tumor growth and progression by preventing the

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