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398098

Sigma-Aldrich

Hydriodic acid

contains no stabilizer, ACS reagent, 55%

Synonym(s):

Hydriotic acid

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About This Item

Empirical Formula (Hill Notation):
HI
CAS Number:
10034-85-2
Molecular Weight:
127.91
MDL number:
MFCD00011347
UNSPSC Code:
12352106
PubChem Substance ID:
329755906
NACRES:
NA.21

grade

ACS reagent

Quality Level

100

assay

55%
55.0-58.0% (ACS specification)

form

liquid

does not contain

stabilizer

impurities

≤0.75% I2

ign. residue

≤0.01%

bp

127 °C (lit.)

density

1.7 g/mL at 25 °C

anion traces

bromide, chloride (as Cl-): ≤0.05%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%
heavy metals (as Pb): ≤0.001%

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, a strong acid, is hydrogen iodide gas dissolved in water.

Application

Hydriodic acid was used for derivatization of urine samples by iodination to detect aromatic amines using multi-dimensional gas chromatography mass spectrometry (GCxGC-qMS).
It may be used in the following processes:
  • Deiodination process during the synthesis of partially fluorinated pyridinium bromides.
  • As a reducing agent for oxidized graphene nanoribbons (OGN).
  • In combination with red phosphorus to reduce pseudoephedrine in the synthesis of methamphetamine.

pictograms

CorrosionEnvironment
GHS05,GHS09

signalword

Danger

Hazard Classifications

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

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Patnaik P.
A Comprehensive Guide to the Hazardous Properties of Chemical Substances, 123-123 (2007)
Graphite oxide and graphene nanoribbons reduction with hydrogen iodide.
Cataldo F, et al.
Fullerenes, Nanotubes, and Carbon Nanostructures, 19(5), 461-468 (2011)
Synthesis and biocompatibility evaluation of partially fluorinated pyridinium bromides.
Vyas SM, et al.
New. J. Chem., 30(6), 944-951 (2006)
S Ito et al.
Pigment cell research, 11(2), 120-126 (1998-05-19)
Melanocytes produce two chemically distinct types of melanin pigments, eumelanins and pheomelanins. These pigments can be quantitatively analyzed by acidic KMnO4 oxidation or reductive hydrolysis with hydriodic acid (HI) to form pyrrole-2,3,5-tricarboxylic acid (PTCA) or aminohydroxyphenylalanine (AHP), respectively. Dark brown
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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