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Specs ⸢ View details ⸥
Chinese name
氢碘酸
English name
Hydriodic acid
Chinese alias
-
English alias
HYDROGEN IODIDE [HSDB] | 53I | hydroiodide | iodine (atomic) | Hydriodic acid, 57 wt. % in H2O, distilled, stabilized, 99.95% | Hydriodic acid, puriss. p.a., ACS reagent, >=47% (T) | EINECS 233-109-9 | Yoduro de hidrogeno anhidro | Hydrogeniodid | Hyriodi
CAS number
10034-85-2
molecular formula
HI
molecular weight
127.91 g/mol
Exact mass
ACS
PSA
0.000 Ų
Logp
0.900
Safety
- DOT Label： Poison Gas Corrosive
- First Aid： ERG2024, Guide 125 (Hydrogen iodide, anhydrous): In Canada, an Emergency Response Assistance Plan (ERAP) may be required for this product. Please consult the shipping paper and/or the "ERAP" section.
- AEGLs Notes： AEGLs Status: Interim
- AEGLs Table： 8 hr: 31
- Fire Hazards： Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.
- Safe Storage： Fireproof if in building. Separated from metals and oxidants. Keep in a well-ventilated room.
- Fire Fighting： In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep cylinder cool by spraying with water.
- Eye Prevention： Wear face shield or eye protection in combination with breathing protection.
- Fire Potential： Ignites on contact with magnesium; perchloric acid; potassium + heat; potassium chlorate + heat; oxidants.
- Health Hazards： ERG2024, Guide 125 (Hydrogen iodide, anhydrous): · Runoff from fire control or dilution water may cause environmental contamination.
- Reactive Group： Acids, Strong Non-oxidizing
- Adverse Effects： Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.
- Cleanup Methods： 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 Departme...
- Exposure Routes： Serious local effects by all routes of exposure.
- Hazards Summary： 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. 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; 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.
- Inhalation Risk： On loss of containment, a harmful concentration of this gas in the air will be reached very quickly.
- Skin Prevention： Protective gloves. Cold-insulating gloves. Protective clothing.
- DOT ID and Guide： 2197 125
- Disposal Methods： Add slowly to a large amount of soda ash and slaked lime in solution with stirring. Flush resulting solution to a sewer.
- Physical Dangers： The gas is heavier than air.
- EC Classification： Symbol: C; R: 35; S: (1/2)-9-26-36/37/39-45; Note: 5
- Reactivity Alerts： Water-Reactive
- Spillage Disposal： Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation.
- UN Classification： UN Hazard Class: 2.3; UN Subsidiary Risks: 8
- FIFRA Requirements： 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/
- First Aid Measures： Eye First Aid: Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.
- Reactivity Profile： HYDROGEN IODIDE, ANHYDROUS is a strongly acidic gas. Reacts rapidly and exothermically with bases. Reacts with active metals in the presence of moisture, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain alkenes. Reacts with cyanide compounds to release gaseous hydrogen cyanide. May generate flammable and/or toxic gases in contact with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and reducing agents. Additional gas-generating reactions may occur with sulfites, nitrites, thiosulfates, dithionites, and carbonates. Can catalyze chemical reactions among other materials. Decomposes at high temperatures to generate toxic products. Reacts with oxidizing agents to give iodine (when...
- Signs and Symptoms： Eye Exposure: Redness. Pain. Severe burns.
- Storage Conditions： Keep protected from light and air, preferably not above 3 °C.
- Exposure Prevention： AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!
- Allowable Tolerances： 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/
- Ingestion Prevention： Do not eat, drink, or smoke during work.
- Medical Surveillance： Before beginning employment and at regular times after that, for those with frequent or potentially high exposures, the following are recommended: lung function tests, chest x-ray following acute overexposure, kidney function tests.
- Inhalation Prevention： Use ventilation, local exhaust or breathing protection.
- Hazards Identification： ERG Hazard Classes: Toxic/poison by inhalation (TIH/PIH)
- Nonfire Spill Response： Do not touch or walk through spilled material. Stop leak if you can do it without risk. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Do not direct water at spill or source of leak. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Isolate area until gas has dispersed. (ERG, 2024)
- Air and Water Reactions： Dissolves exothermically in water. The heat may raise toxic and corrosive acidic fumes. Fumes in air.
- Fire Fighting Procedures： 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/
- Isolation and Evacuation： Protection: - PROTECT people from downwind during NIGHT time: 2.7 km (1.7 mi)
- Other Safety Information： Chemical Assessment: IMAP assessments - Hydriodic acid: Human health tier I assessment
- DOT Hazard Classification： Placard/Label(s)
- Accidental Release Measures： Spill or Leak: ERG2024, Guide 125 (Hydrogen iodide, anhydrous): · Isolate area until gas has dispersed.
- Threshold Limit Values (TLV)： 0.01 ppm as TWA; A4 (not classifiable as a human carcinogen).
- Hazard Classes and Categories： Skin Corr. 1A
- Effects of Short Term Exposure： Rapid evaporation of the liquid may cause frostbite. The substance is corrosive to the eyes, skin and respiratory tract. Inhalation may cause severe swelling of the throat. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. Medical observation is indicated.
- Standard Transportation Number： 49 302 26; Hydrogen iodide solution, hydriodic acid
- DHS Chemicals of Interest (COI)： Security Issue: Theft - WME: Weapons of Mass Effect chemical material that, if stolen or diverted, can be converted into weapons using simple chemistry, equipment, or techniques.
- Antidote and Emergency Treatment： 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 ... . /...
- Protective Action Criteria (PAC)： PAC-3: 120 [ppm]
- Shipment Methods and Regulations： The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.
- Critical Temperature and Pressure： Critical temperature: 151.0 °C; critical pressure: 82.0 atm
- Probable Routes of Human Exposure： (NOES Survey 1981-1983) has statistically estimated that 8,545 workers (2,191 of these are female) are potentially exposed to hydrogen iodide in the US(1).
- Occupational Exposure Limits (OEL)： MAK (Maximale Arbeitsplatz Konzentration): skin absorption (H)
- Personal Protective Equipment (PPE)： Wear protective gloves and clothing to prevent any reasonable probability of skin contact. Contact lenses should not be worn when working with this chemical. Wear splash-proof chemical goggles and face shield unless full face-piece respiratory protection is worn. Employees should wash immediately with soap when skin is wet or contaminated. Provide emergency showers and eyewash.
- Shipping Name/ Number DOT/UN/NA/IMO： IMO 2.0; Hydrogen iodide, anhydrous
- Emergency Response Planning Guidelines： Emergency Response: ERG2024, Guide 125 (Hydrogen iodide, anhydrous): · ALWAYS stay away from tanks in direct contact with flames.
- Skin, Eye, and Respiratory Irritations： The vapors of hydrogen iodide are severly irritating to the mucous membranes of the eyes and nose.
- Exposure Control and Personal Protection： Exposure Summary: 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].
Technical Documents
Related
upstream information
Methods of Manufacturing：
hydrogen iodide (CID:24841); water (CID:962); hydrogen sulfide (CID:402); phosphorous pentoxide (CID:6326975); hydrazine (CID:9321)
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Research chemical CAS 10034-85-2 99. 95% 1. 5% 50ml 95% 5%
Research chemical CAS 10034-85-2 99. 95% 1. 5% 50ml 95% 5%, complete specifications, for production, research, laboratory testing and inspection; digital one-stop procurement platform for scientific materials.
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