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210013

Sigma-Aldrich

Hydriodic acid

contains no stabilizer, distilled, 57 wt. % in H2O, 99.99% trace metals basis

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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

99.99% trace metals basis

form

liquid

does not contain

stabilizer

concentration

57 wt. % in H2O

bp

127 °C (lit.)

mp

-50 °C

density

1.701 g/mL at 25 °C

storage temp.

room temp

SMILES string

I

InChI

1S/HI/h1H

InChI key

XMBWDFGMSWQBCA-UHFFFAOYSA-N

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1 of 4

This Item
248649210021752851
Hydriodic acid contains no stabilizer, distilled, 57 wt. % in H2O, 99.99% trace metals basis

Sigma-Aldrich

210013

Hydriodic acid

-
Hydriodic acid contains ≤1.5% hypophosphorous acid as stabilizer, ACS reagent, ≥47.0%

Sigma-Aldrich

248649

Hydriodic acid

Essential Grade
Hydriodic acid 57 wt. % in H2O, distilled, stabilized, 99.95%

Sigma-Aldrich

210021

Hydriodic acid

-
Hydriodic acid 57 wt. %, distilled, 99.999% trace metals basis

Sigma-Aldrich

752851

Hydriodic acid

-
form

liquid

form

liquid

form

liquid

form

liquid

concentration

57 wt. % in H2O

concentration

≥47.0%

concentration

57 wt. % in H2O

concentration

57 wt. %

bp

127 °C (lit.)

bp

127 °C (lit.)

bp

127 °C (lit.)

bp

127 °C (lit.)

mp

-50 °C

mp

-

mp

-

mp

-

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

-

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 in the synthesis of trideuterio-[13C]-methyl iodide and [13C]-methyl iodide.

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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Customers Also Viewed

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A practical laboratory route to the synthesis of trideuteriomethyl-[13C] iodide.
Coumbarides GS, et al.
Journal of Labelled Compounds & Radiopharmaceuticals, 46(4), 291-296 (2003)
Patnaik P.
A Comprehensive Guide to the Hazardous Properties of Chemical Substances, 123 (2007)
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)
Hailong Li et al.
Journal of agricultural and food chemistry, 60(21), 5307-5310 (2012-05-15)
The paper reports on a headspace gas chromatographic (HS-GC) method for the determination of methoxyl in lignin. The method involves the quantitive cleavage of methoxyl with hydroiodic acid (HI) to form methyl iodide in a closed headspace sample vial at

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