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210021

Sigma-Aldrich

Hydriodic acid

57 wt. % in H2O, distilled, stabilized, 99.95%

Synonym(s):
Hydriotic acid
Empirical Formula (Hill Notation):
HI
CAS Number:
Molecular Weight:
127.91
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

assay

99.95%

form

liquid

contains

<1.5% hypophosphorous acid as stabilizer

concentration

57 wt. % in H2O

bp

127 °C (lit.)

density

1.701 g/mL at 25 °C

storage temp.

2-8°C

SMILES string

I

InChI

1S/HI/h1H

InChI key

XMBWDFGMSWQBCA-UHFFFAOYSA-N

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General description

Hydriodic acid (HI) along with red phosphorus (HI/red P) plays the role of a reducing agent for the preparation of methamphetamine.[55] HI/Phosphorous causes the reduction of various polycyclic quinones.[56] HI also participates as a reducing agent for the conversion of various polyarene quinones, hydroquinones and phenols to the corresponding aromatic hydrocarbons.[56]
Hydriodic acid is hydrogen iodide gas dissolved in water. It is a strong acid generally used as a reducing agent.[46]

Application

Hydriodic acid may be used as a reagent for the conversion of fatty alcohols and glyceryl ethers to alkyl iodides.[46]

Packaging

50, 250 mL in glass bottle

Pictograms

CorrosionEnvironment

Signal Word

Danger

Hazard Statements

Hazard Classifications

Aquatic Chronic 2 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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