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210021

Sigma-Aldrich

Hydriodic acid

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

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

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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This Item
248649210013398098
Hydriodic acid 57&#160;wt. % in H2O, distilled, stabilized, 99.95%

Sigma-Aldrich

210021

Hydriodic acid

-
Hydriodic acid contains &#8804;1.5% hypophosphorous acid as stabilizer, ACS reagent, &#8805;47.0%

Sigma-Aldrich

248649

Hydriodic acid

Essential Grade
Hydriodic acid contains no stabilizer, distilled, 57&#160;wt. % in H2O, 99.99% trace metals basis

Sigma-Aldrich

210013

Hydriodic acid

-
Hydriodic acid contains no stabilizer, ACS reagent, 55%

Sigma-Aldrich

398098

Hydriodic acid

Essential Grade
form

liquid

form

liquid

form

liquid

form

liquid

concentration

57 wt. % in H2O

concentration

≥47.0%

concentration

57 wt. % in H2O

concentration

-

bp

127 °C (lit.)

bp

127 °C (lit.)

bp

127 °C (lit.)

bp

127 °C (lit.)

density

1.701 g/mL at 25 °C

density

1.5 g/mL at 25 °C

density

1.701 g/mL at 25 °C

density

1.7 g/mL at 25 °C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

room temp

storage temp.

2-8°C

General description

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

Application

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

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


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Studies on the composition of glyceryl ethers and their preparation from diacyl glyceryl ethers in liver oils.
Guyer KE, et al.
Journal of Lipid Research, 4(4), 385-391 (1963)
Chao Chen et al.
Nature communications, 10(1), 1927-1927 (2019-04-28)
Circularly polarized light (CPL) detection is required in various fields such as drug screening, security surveillance and quantum optics. Conventionally, CPL photodetector needs the installation of optical elements, imposing difficulties for integrated and flexible devices. The established CPL detectors without
Methamphetamine synthesis via hydriodic acid/red phosphorus reduction of ephedrine.
Skinner HF.
Forensic Science International, 48(2), 123-134 (1990)
Efficient reduction of polycyclic quinones, hydroquinones, and phenols with hydriodic acid.
Konieczny M and Harvey RG.
The Journal of Organic Chemistry, 44(26), 4813-4816 (1979)
Relationships between circulating and intracellular thyroid hormones: physiological and clinical implications.
P R Larsen et al.
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