Hydrogen iodide

Toxic Gases & Vapors -> Acids, Inorganic

Corrosives

5.66 g/L at 0 °C; 5.23 g/L at 25 °C

A solution of hydrogen iodide in water; marketed in various concentrations; 57% HI density: 1.7; 47% HI, density: 1.5; 10% HI, density: 1.1; colorless when freshly made, but rapidly turns yellowish or brown on exposure to light and air; miscible with water and alcohol; dissolves iodine; the azeotrope (56.9% HI) boils at 127 °C; density: 1.70; strong, corrosive acid; attacks natural rubber; 0.10 molar solution: pH 1.0 /Hydriodic acid/

5.66 @25 °C

Extremely soluble in water; 234 g/100 g water at 10 °C; 900 g/100 g water at 0 °C

Solubility in water, g/100ml at 20 °C: 42 (freely soluble)

-35.1 °C at 760 mm Hg

Boiling point: -18.9 °C at 2 atm; 7.3 °C at 5 atm; 32.0 at 10 atm; 127.5 °C at 60 atm; decomposed by light; specific heat: 0.0545 cal/ g °C at 25 °C; forms an azeotrope with water /Hydrogen iodide/

-35.5 °C

-35.38 °C @760 [mm Hg]

WHEN HEATED TO DECOMPOSITION, IT EMITS HIGHLY TOXIC FUMES OF /HYDROGEN IODIDE/.

/IF/ ... DECOMP IN SIMPLE AQUEOUS SOLN ... FREE IODINE ... LIBERATED.

-50.8 °C

-50.8 °C

-50.8 °C

4.4 (Air = 1)

Relative vapor density (air = 1): 4.4

5,938 mm Hg at 25 °C

Vapor pressure, kPa at 20 °C: 733

5940 [mm Hg] @25 °C

Danger

H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, and P501 (click each P-code to see the statement)

Danger

H280 (46.8%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]

P260, P261, P264, P264+P265, P271, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P403+P233, P405, P410+P403, and P501 (click each P-code to see the statement)

Chemical: Hydriodic acid

List I Chemical: A chemical specified by regulation that, in addition to legitimate uses, is used in manufacturing a controlled substance in violation of the Act and is important to the manufacture of a controlled substance. (21 eCFR 1310.02)

Hydriodic acid is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Hydriodic acid are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 16-01-2020 https://echa.europa.eu/registration-dossier/-/registered-dossier/30179

Hydriodic acid: Does not have an individual approval but may be used under an appropriate group standard

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Corrosive

Poison Gas Corrosive

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

Excerpt from ERG Guide 125 [Gases - Toxic and/or Corrosive]:

· Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

· Some may burn but none ignite readily.

Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

Excerpt from ERG Guide 125 [Gases - Toxic and/or Corrosive]:

· TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury or death.

· TOXIC and/or CORROSIVE; may be fatal if inhaled, ingested or absorbed through skin.

Highly corrosive to skin; [Quick CPC] Inhalation exposures of 35 ppm can cause irritation of the throat, and higher exposures can cause laryngeal edema and pulmonary edema. [HSDB] When spilled in water, Acetyl iodide can release Hydrogen iodide. [ERG 2016] Decomposed by light; Anhydrous hydrogen iodide forms hydriodic acid when mixed with water; A strong irritant; [Merck Index] Evaporating liquid can cause frostbite; Corrosive to skin, eye, and respiratory tract; Inhalation may cause severe swelling of the throat and pulmonary edema; [ICSC] See Iodine for the TLV of Iodides.

1787 154

2197 125

Acids, Strong Non-oxidizing

Acids, Strong Non-oxidizing

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

Excerpt from ERG Guide 125 [Gases - Toxic and/or Corrosive]:

In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep cylinder cool by spraying with water.

Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.

Rinse skin with plenty of water or shower for at least 15 minutes. ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer immediately for medical attention.

Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· Do not touch or walk through spilled material.

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

Excerpt from ERG Guide 125 [Gases - Toxic and/or Corrosive]:

General First Aid:

General First Aid:

· Wear positive pressure self-contained breathing apparatus (SCBA).

· Wear positive pressure self-contained breathing apparatus (SCBA).

TIH (Toxic Inhalation Hazard) - Term used to describe gases and volatile liquids that are toxic when inhaled. Some are TIH materials themselves, e.g., chlorine, and some release TIH gases when spilled in water, e.g., chlorosilanes. [ERG 2016].

If material involved in fire: Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Do not apply water to point of leak in tank car or container. Apply water from as far a distance as possible. Do not use water on material itself. If large quantities of combustibles are involved, use water in flooding quantities as spray and fog. Use water spray to knock-down vapors. /Hydrogen Iodide, anhyrous/

If material involved in fire: Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as spray and fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. /Hydriodic acid/

Hydroidic acid must be stored to avoid contact with strong acids (such as hydrochloric, sulfuric and nitric), chemically active metals (such as potassium, sodium, magnesium and zinc), and strong oxidizers (such as chlorine, bromine, and fluorine) since violent reactions occur. Store in tightly closed containers in a cool, well vented area away from heat and moisture. Protect storage containers from physical damage. Procedures for the handling, use and storage of cylinders should be in compliance with OSHA 1910.101 and 1910.169 as with the recommendations of the Compressed Gas Association.

MATERIALS THAT ARE TOXIC AS STORED OR THAT CAN DECOMPOSE INTO TOXIC COMPONENTS ... SHOULD BE STORED IN A COOL WELL VENTILATED PLACE, OUT OF THE DIRECT RAYS OF THE SUN, AWAY FROM AREAS OF HIGH FIRE HAZARD, & SHOULD BE PERIODICALLY INSPECTED. INCOMPATIBLE MATERIALS SHOULD BE ISOLATED. ...

Keep protected from light and air, preferably not above 3 °C.

Evacuate and restrict persons not wearing protective equipment from area of spill or leak until cleanup is complete. Remove all ignition sources. Ventilate area of spill or leak. Neutralize with chemically basic substances such as sodium bicarbonate, soda ash, or slaked lime. Absorb liquids in vermiculite, dry sand, earth, peat, carbon, or a similar material and deposit in sealed containers. Keep this chemical out of confined spaces, such as a sewer, because of the possibility of an explosion, unless the sewer is designed to prevent the build up of explosive concentrations. It may be necessary to contain and dispose of this chemical as a hazardous waste. If material or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Contact your Department of Environmental Protection or your regional office of the federal EPA for specific recommendations. If employees are required to clean-up spills, they must be properly trained and equipped. OSHA 1910.120(q) may be applicable.

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

Excerpt from ERG Guide 125 [Gases - Toxic and/or Corrosive]:

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Add slowly to a large amount of soda ash and slaked lime in solution with stirring. Flush resulting solution to a sewer.

Cough. Sore throat. Burning sensation behind the breastbone. Shortness of breath. Laboured breathing.

Redness. Pain. Skin burns. Blisters. ON CONTACT WITH LIQUID: FROSTBITE.

Redness. Pain. Severe burns.

/SIGNS AND SYMPTOMS/ Long term exposure: Chronic exposure can cause injury to kidneys and spleen, hypotension, palpitation, ataxia and weakness. Very irritating substances may cause lung damage. Prolonged absorption of /hydriodic acid/ can cause skin rash. headache, irritation of mucous membranes with running nose.

/SIGNS AND SYMPTOMS/ Edema of the glottis necessitating tracheotomy has occurred.

/SIGNS AND SYMPTOMS/ Inhalation of hydrogen iodide causes irritation of the upper respiratory tract, and a concentration of about 35 ppm causes irritation of the throat after short exposure. More severe exposures result in pulmonary edema, and often in laryngeal edema.

/SIGNS AND SYMPTOMS/ /If/ ... decomposition in simple aqueous soln ... free iodine ... liberated and if taken internally ... it is irritating to the alimentary tract.

For more Human Toxicity Excerpts (Complete) data for HYDROGEN IODIDE (8 total), please visit the HSDB record page.

Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist respirations if needed. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. Activated charcoal is not effective. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Do not attempt to neutralize because of exothermic reaction. Cover skin burns with dry, sterile dressings after decontamination ... . /Inorganic acids and related compounds/

Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Early intubation, at the first sign of upper airway obstruction, may be necessary. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Consider administering a beta agonist such as albuterol for severe bronchospasm ... . Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's(LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Inorganic acids and related compounds/

Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patent can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... . Cover skin burns with dry sterile dressings after decontamination ... . /Iodine and related compounds/

Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Iodine and related compounds/

Residues of the following chemical substances are exempted from the requirement of a tolerance when used in accordance with good manufacturing practice as ingredients in an antimicrobial pesticide formulation, provided that the substance is applied on a semi-permanent or permanent food-contact surface (other than being applied on food packaging) with adequate draining before contact with food. ... (b) The following chemical substances when used as ingredients in an antimicrobial pesticide formulation may be applied to: Dairy processing equipment, and food-processing equipment and utensils. Hydriodic acid is included on this list. Limit: When ready for use, the total end-use concentration of all iodide-producing chemicals is not to exceed 25 ppm of titratable iodine. /Hydriodic acid/

Residues of the following chemical substances are exempted from the requirement of a tolerance when used in accordance with good manufacturing practice as ingredients in an antimicrobial pesticide formulation, provided that the substance is applied on a semi-permanent or permanent food-contact surface (other than being applied on food packaging) with adequate draining before contact with food. ... (c) The following chemical substances when used as ingredients in an antimicrobial pesticide formulation may be applied to: Food-processing equipment and utensils. hydriodic acid is included on this list. Limit: When ready for use, the total end-use concentration of all iodide-producing chemicals in the solution is not t exceed 25 ppm of titratable iodine. /Hydriodic acid/

Hydrogen iodide, anhydrous

95.33

500

Weapons of Mass Effect chemical material that, if stolen or diverted, can be converted into weapons using simple chemistry, equipment, or techniques.

Used as a reducing agent and in laboratory analysis; Used to produce pharmaceuticals, disinfectants, and other chemicals; [HSDB]

For hydriodic acid (USEPA/OPP Pesticide Code: 46912) there are 0 label matches. /SRP: Not registered for current use in the U.S., but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./

Reducing agent, manufacture of inorganic iodides, pharmaceuticals, disinfectants. The 57% acid is also used for analytical purposes, such as methoxyl determinations. /Hydriodic acid/

FORMERLY USED FOR ITS EXPECTORANT ACTION IN CHRONIC BRONCHITIS & BRONCHIAL ASTHMA TO LIQUEFY THICK, TENACIOUS SPUTUM. /HYDRIODIC ACID, SYRUP/

Preparation of iodine salts, organic preparations, analytical reagent, disinfectant, and pharmaceuticals. /Hydriodic acid/

For more Uses (Complete) data for HYDROGEN IODIDE (6 total), please visit the HSDB record page.

2023: 550,000 - <700,000 lb

(1972) GREATER THAN 4.54X10+5 G

(1975) GREATER THAN 4.54X10+5 G

Prepared by absorption of hydrogen iodide gas in water or by the action of iodine on hydrogen sulfide. /Hydriodic acid/

Prepared by catalytic reaction of iodine and hydrogen or concentrated hydriodic acid solutions with phosphorous pentoxide. /Hydrogen iodide gas/

Hydroiodic acid is the colorless solution formed when hydrogen iodide gas dissolves in water. It is prepared by reaction of iodine with hydrogen sulfide or hydrazine, or by an electrolytic method. Typically commercial hydroiodic acid contains 40-55% HI.

By catalytic union of the elements. Also prepd by treating concn hydriodic acid soln with phosphorus pentoxide. /Hydrogen iodide gas/

... /Hydrogen iodide gas/ cannot be prepared using strong acids because it is readily oxidized; therefore, it must be prepared from a weak acid and iodine, or by the hydrolysis of certain iodides. Hydriodic acid is the colorless solution formed when hydrogen iodide gas dissolves in water, and at commercial strength, typically contains 47% hydrogen iodide.

HYDRIODIC ACID SYRUP /AN EXPECTORANT/ CONTAINS APPROX 1.4% HYDRIODIC ACID ... /HYDRIODIC ACID SYRUP; FORMER/

Commercial aqueous hydrogen iodide solution contains 40-55 wt% hydrogen iodide

Forms colorless liquid at atmospheric pressure when cooled with dry ice & ether or other cooling mixture /Hydrogen iodide gas/

A solution of hydrogen iodide in water.

Grades: Technical, 47%; NF, diluted 10% /Hydriodic acid/

Hydriodic Acid

A chemical specified by regulation that, in addition to legitimate uses, is used in manufacturing a controlled substance in violation of the Act and is important to the manufacture of a controlled substance. (21 eCFR 1310.02)

Agriculture, Forestry, Fishing and Hunting

Hydriodic acid: ACTIVE