H1758 Sigma

Hydrochloric acid

36.5-38.0%, BioReagent, for molecular biology



Related Categories Acids, Acids & Bases, Biochemicals, Chemical Synthesis, Core Bioreagents,
grade   for molecular biology
vapor density   1.3 (vs air)
vapor pressure   3.23 psi ( 21.1 °C)
  7.93 psi ( 37.7 °C)
product line   BioReagent
assay   36.5-38.0%
concentration   30 -50%
color   light yellow
bp   >100 °C(lit.)
solubility   H2O: soluble
density   1.2 g/mL at 25 °C(lit.)
cation traces   Fe: ≤0.2 ppm
  heavy metals (as Pb): ≤1 ppm
suitability   suitable for molecular biology



100, 500 mL in glass bottle

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LC-MS Grade Solvents and Reagents

Biomedical Applications
Safety & Documentation

Safety Information

Signal word 
Hazard statements 
UN 1789 8 / PGII
WGK Germany 

Frequently Asked Questions

How does the storage temperature relate to shipping conditions?
The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment.
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What is the Department of Transportation shipping information for this product?
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My question is not addressed here, how can I contact Technical Service for assistance?
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How do I calculate the molarity of Product No. H1758, Hydrochloric acid?
The molarity or molar concentration can be calculated using the following formula: [Density x 1000 x concentration (%)] / (molecular weight)
What is the molarity or molar concentration of Product No. H1758, Hydrochloric acid?
Based on an approximate density of 1.2 g/ml and a percentage range of 36.5 - 38.0%, concentrated HCl is in the range 11.6-12.0 M (which is also 11.6-12.0 Normal, for this monoprotic acid).
Is Product No. H1758, Hydrochloric acid, given a grade designation?
This product is designated as Molecular Biology grade and is suitable for molecular biology applications.
Show more questions
Protocols & Articles


Enzymatic Assay of Catalase (EC

The continuous spectrophotometric rate reduction determination (A240, Light path = 1 cm) is based on the following reaction:
Keywords: Reductions

Enzymatic Assay of Ficin (EC

The spectrophotometric stop rate detemination (A280, Light path = 1 cm) is based on the following reaction:

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