H

Hydroiodic acid

IUPAC: iodane

HI Acids CAS 10034-85-2
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Quick Reference
Formula / NotationHI
CAS Number10034-85-2
Molecular Weight127.9124
Melting Point-50.8 °C
Boiling Point-35.1 °C at 760 mm Hg
Density5.66 g/L at 0 °C; 5.23 g/L at 25 °C
SolubilityExtremely soluble in water; 234 g/100 g water at 10 °C; 900 g/100 g water at 0 °C
AppearanceHydriodic acid appears as a colorless to yellow liquid with a pungent odor. Consists of a solution of hydrogen iodide in water. Fumes irritate the eyes and mucous membranes. Corrosive to metals and...
Also Known Asiodane; Hydriodic acid; HYDROGEN IODIDE; 10034-85-2; Hyriodic acid; Acido yodhidrico; Acide iodhydrique; Hydrogen iodide (HI); Anhydrous hydriodic acid; Hydrogen iodide, anhydrous
CategoryAcids

What is Hydroiodic acid?

Iodine atom is chemical element with atomic number 53. It has a role as a micronutrient and a human metabolite.

Formula & Notation

HI

IUPAC Name: iodane

Other Names / Synonyms: iodane; Hydriodic acid; HYDROGEN IODIDE; 10034-85-2; Hyriodic acid; Acido yodhidrico; Acide iodhydrique; Hydrogen iodide (HI); Anhydrous hydriodic acid; Hydrogen iodide, anhydrous

Properties & Characteristics

Appearance: Hydriodic acid appears as a colorless to yellow liquid with a pungent odor. Consists of a solution of hydrogen iodide in water. Fumes irritate the eyes and mucous membranes. Corrosive to metals and.... Molecular formula: HI. Molecular weight: 127.9124 g/mol. Boiling point: -35.1 °C at 760 mm Hg. Melting point: -50.8 °C. Density: 5.66 g/L at 0 °C; 5.23 g/L at 25 °C. Solubility: Extremely soluble in water; 234 g/100 g water at 10 °C; 900 g/100 g water at 0 °C. Vapor pressure: 5,938 mm Hg at 25 °C. LogP: 0.9.

Physical Data

PropertyValue
Melting Point-50.8 °C
Boiling Point-35.1 °C at 760 mm Hg
Density5.66 g/L at 0 °C; 5.23 g/L at 25 °C
Molecular Weight127.9124
SolubilityExtremely soluble in water; 234 g/100 g water at 10 °C; 900 g/100 g water at 0 °C
AppearanceHydriodic acid appears as a colorless to yellow liquid with a pungent odor. Consists of a solution of hydrogen iodide in water. Fumes irritate the eyes and mucous membranes. Corrosive to metals and...

Uses & Applications

Used in industrial chemical synthesis, fertilizer production, battery electrolytes, metal processing, and laboratory acid-base reactions.

Safety Information

Corrosive. Causes severe burns to skin, eyes, and respiratory tract. Wear appropriate PPE including gloves, goggles, and lab coat. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Hydroiodic acid
Formula HI
CAS Number 10034-85-2
Molecular Weight 127.9124
Category Acids
Synonyms iodane; Hydriodic acid; HYDROGEN IODIDE; 10034-85-2; Hyriodic acid; Acido yodhidrico; Acide iodhydrique; Hydrogen iodide (HI); Anhydrous hydriodic acid; Hydrogen iodide, anhydrous

Frequently Asked Questions

Iodine atom is chemical element with atomic number 53. It has a role as a micronutrient and a human metabolite.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.