Hydrogen iodide

CAS Registry Number®

10034-85-2

CAS Name

Hydrogen iodide

Molecular Formula

HI

Molecular Mass

127.91

Cite this Page

Hydrogen iodide.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=10034-85-2 (retrieved 2025-03-28) (CAS RN: 10034-85-2).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    -35.5 °C

  • Melting Point (1)

    -51 °C

  • Density (2)

    2.85 g/cm³ (liquid) @ Temp: -5 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/HI/h1H

InChIKey

InChIKey=XMBWDFGMSWQBCA-UHFFFAOYSA-N

SMILES

I

Canonical SMILES

I

Other Names for this Substance

  • Hydriodic acid
  • Anhydrous hydriodic acid
  • Hydrogen iodide
  • Hydrogen iodide (HI)
  • Hydrogen monoiodide

View All

Deleted or Replaced CAS Registry Numbers

8014-90-2, 8052-26-4, 39445-43-7, 2487183-44-6

CAS INSIGHTSTM
A hexagon honeycomb pattern featuring icons representing Data Fabric Analytics, Antennas, Construction, DNA, and Sustainability Bamboo. Each hexagon contains a distinct symbol related to its theme, arranged in a visually appealing and interconnected design.