MilliporeSigma
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210013

Sigma-Aldrich

Hydriodic acid

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

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.

2-8°C

SMILES string

I

InChI

1S/HI/h1H

InChI key

XMBWDFGMSWQBCA-UHFFFAOYSA-N

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General description

Hydriodic acid is hydrogen iodide gas dissolved in water. It is a strong acid generally used as a reducing agent.
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.

Application

Hydriodic acid may be used in the synthesis of trideuterio-[13C]-methyl iodide and [13C]-methyl iodide.

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

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

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)
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)
Kazumasa Wakamatsu et al.
Pigment cell & melanoma research, 22(4), 474-486 (2009-06-06)
Pheomelanogenesis is a complex pathway that starts with the oxidation of tyrosine (or DOPA, 3,4-dihydroxyphenylalanine) by tyrosinase in the presence of cysteine, which results in the production of 5-S-cysteinyldopa and its isomers. Beyond that step, relatively little has been clarified
Relationships between circulating and intracellular thyroid hormones: physiological and clinical implications.
P R Larsen et al.
Endocrine reviews, 2(1), 87-102 (1981-01-01)

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