Chemical Safety Data Sheet MSDS / SDS
MERCURY(II) IODIDE
Revision Date:2026-04-11Revision Number:1
Product identifier
- Product name: MERCURY(II) IODIDE
- Product name: MERCURY(II) IODIDE
- CBnumber: CB2469935
- CAS: 7774-29-0
- EINECS Number: 231-873-8
- Synonyms: Mercuric Iodide,HgI2
- Synonyms: Mercuric Iodide,HgI2
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
- Uses advised against: none
Company Identification
- Company: Chemicalbook
- Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
- Telephone: 010-86108875
GHS Label elements, including precautionary statements
-
Symbol(GHS)
- Signal wordDanger
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P273 Avoid release to the environment.
P262 Do not get in eyes, on skin, or on clothing.
H410 Very toxic to aquatic life with long lasting effects
H373 May cause damage to organs through prolonged or repeated exposure
H330 Fatal if inhaled
H310 Fatal in contact with skin
H300 Fatal if swallowed
Hazard statements
H410 Very toxic to aquatic life with long lasting effects
H373 May cause damage to organs through prolonged or repeated exposure
P273 Avoid release to the environment.
P284 [In case of inadequate ventilation] wear respiratory protection.
P271 Use only outdoors or in a well-ventilated area.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P262 Do not get in eyes, on skin, or on clothing.
P270 Do not eat, drink or smoke when using this product.
P264 Wash ... thoroughly after handling.
Response
P391 Collect spillage.
P319 Get medical help if you feel unwell.
P320 Specific treatment is urgent (see ... on this label).
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P361+P364 Take off immediately all contaminated clothing and wash it before reuse.
P316 Get emergency medical help immediately.
P302+P352 IF ON SKIN: Wash with plenty of water/...
P330 Rinse mouth.
P321 Specific treatment (see ... on this label).
P301+P316 IF SWALLOWED: Get emergency medical help immediately.
Storage
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
Disposal
P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Substance
- Product name: MERCURY(II) IODIDE
- Product name: MERCURY(II) IODIDE
- Synonyms: Mercuric Iodide,HgI2
- Synonyms: Mercuric Iodide,HgI2
- CAS: 7774-29-0
- EC number: 231-873-8
- MF: HgI2
- MW: 454.4
General advice
First aiders need to protect themselves. Show this material safety data sheet to the doctor in attendance.
If inhaled
After inhalation: fresh air. Immediately call in physician. If breathing stops: immediately apply artificial respiration, if necessary also oxygen.
In case of skin contact
In case of skin contact: Take off immediately all contaminated clothing. Rinse skin with water/ shower. Call a physician immediately.
In case of eye contact
After eye contact: rinse out with plenty of water. Call in ophthalmologist. Remove contact lenses.
If swallowed
If swallowed: give water to drink (two glasses at most). Seek medical advice immediately. In exceptional cases only, if medical care is not available within one hour, induce vomiting (only in persons who are wide awake and fully conscious), administer activated charcoal (20 - 40 g in a 10% slurry) and consult a doctor as quickly as possible.
Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section 2) and/or in section 11
Protection of first-aiders
For personal protection see section 8.
Notes to physician
No data available
Suitable extinguishing media
Use extinguishing measures that are appropriate to local circumstances and the surrounding environment.
Unsuitable extinguishing media
For this substance/mixture no limitations of extinguishing agents are given.
Specific hazards during fire fighting
Not combustible. Ambient fire may liberate hazardous vapours.
Hazardous combustion products
Hydrogen iodide Mercury/mercury oxides.
Specific extinguishing methods
Suppress (knock down) gases/vapors/mists with a water spray jet. Prevent fire extinguishing water from contaminating surface water or the ground water system.
Special protective equipment for fire-fighters
Stay in danger area only with self-contained breathing apparatus. Prevent skin contact by keeping a safe distance or by wearing suitable protective clothing.
NFPA 704
3
0
0
| HEALTH | 3 | Short exposure could cause serious temporary or moderate residual injury (e.g. liquid hydrogen, sulfuric acid, calcium hypochlorite, hexafluorosilicic acid) | |
| FIRE | 0 | Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. Materials that will not burn in air when exposed to a temperature of 820 °C (1,500 °F) for a period of 5 minutes.(e.g. Carbon tetrachloride) | |
| REACT | 0 | Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2) | |
| SPEC. HAZ. |
Personal precautions, protective equipment and emergency procedures
Advice for non-emergency personnel: Avoid generation and inhalation of dusts in all circumstances. Avoid substance contact. Ensure adequate ventilation. Evacuate the danger area, observe emergency procedures, consult an expert. Advice for emergency responders: For personal protection see section 8.
Environmental precautions
Do not let product enter drains.
Methods and materials for containment and cleaning up
Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions (see sections 7 and 10). Take up carefully. Dispose of properly. Clean up affected area. Avoid generation of dusts.
Handling
Advice on safe handlingWork under hood. Do not inhale substance/mixture.
Avoidance of contact
Strong oxidizing agents
Storage
Further information on storage conditionsTightly closed. Dry. Keep in a well-ventilated place. Keep locked up or in an area accessible only to qualified or authorized persons.
Storage class
6.1B, Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
Recommended storage temperature
Recommended storage temperature see product label.
Further information on storage stability
Light sensitive.
Packaging material
Suitable material: Amber HR-HDPE Bottle/Jar
Ingredients with workplace control parameters
Biological occupational exposure limits
Engineering measures
No data available
Personal protective equipment
Respiratory protectionrequired when dusts are generated.
Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system.
Recommended Filter type
Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system.
Filter type P3
The entrepeneur has to ensure that maintenance, cleaning and testing of respiratory protective devices are carried out according to the instructions of the producer. These measures have to be properly documented.
Eye/face protection
The entrepeneur has to ensure that maintenance, cleaning and testing of respiratory protective devices are carried out according to the instructions of the producer. These measures have to be properly documented.
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Safety glasses
Skin and body protection
Safety glasses
protective clothing
Hand protection
Material
Nitrile rubber
Break through time
480 min
Glove thickness
0.11 mm
Protective index
Full contact
Manufacturer
KCL 741 L
Material
Nitrile rubber
Break through time
480 min
Glove thickness
0.11 mm
Protective index
Splash contact
Manufacturer
KCL 741 L
Remarks
This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D- 36124 Eichenzell, Internet: www.kcl.de).
Hygiene measures
Immediately change contaminated clothing. Apply preventive skin protection. Wash hands and face after working with substance.
Information on basic physicochemical properties
- Particle characteristics Particle sizeNo data available
- Molecular weight454.40 g/mol
- Oxidizing propertiesNo data available
- Explosive propertiesNo data available
- Flow timeNo data available
- Viscosity, kinematicNo data available
- Viscosity, dynamicNo data available
- Decomposition temperatureNo data available
- Autoignition temperatureNot applicable
- Partition coefficient: n-octanol/waterNot applicable for inorganic substances
- Water solubilitysoluble
- Density6.360 g/cm3 (20 °C)
- Relative density6.36
- Physical statebeads
- Solubilitypotassium iodide solution: passes test
- Relative vapor densityNo data available
- Vapor pressure0.006 hPa (80 °C)
- Lower explosion limit / Lower flammability limitNo data available
- Upper explosion limit / Upper flammability limitNo data available
- Burning rateNo data available
- Flammability (liquids)No data available
- Flammability (solid, gas)The product is not flammable.
- Evaporation rateNo data available
- Flash point350°C subl.
- Boiling point/boiling range354 °C
Method: lit. - Melting point/ range259 °C
Method: lit. - pH6-7 (50g/l, H2O, 20℃)(slurry)
- Odor ThresholdNot applicable
- Odorodorless
- Colordark red
- Appearancepowder
- Appearancedark red powder
- Other safety information
Bulk density 6,28 g/l
- Odourodorless
- Odour ThresholdNo data available
- pH6-7 (50g/l, H2O, 20℃)(slurry)
- Melting point/freezing pointMelting point/range: 259 °C
- Initial boiling point and boiling range354 °C at 1013 hPa
- Flash pointNot applicable
- Evaporation rateNo data available
- Flammability (solid, gas)No data available
- Upper/lower flammability or explosive limitsNo data available
- Vapour pressure 0.006 hPa (80 °C)
- Vapour density No data available
- Relative density6.271
- Water solubilitysoluble
- Partition coefficient: n-octanol/waterNo data available
- Autoignition temperatureNo data available
- Decomposition temperatureNo data available
- ViscosityViscosity, kinematic: No data available Viscosity, dynamic: No data available
- Explosive propertiesNo data available
- Oxidizing propertiesNo data available
- Solubility Product Constant (Ksp)pKsp: 28.54
Reactivity
No data available
Chemical stability
The product is chemically stable under standard ambient conditions (room temperature) .
Possibility of hazardous reactions
Risk of explosion with: Alkali metals Risk of ignition or formation of inflammable gases or vapours with: halogen-halogen compounds
Conditions to avoid
Exposure to light may affect product quality. no information available
Incompatible materials
Strong oxidizing agents
Hazardous decomposition products
In the event of fire: see section 5
Information on toxicological effects
Acute toxicityLD50 Oral - Rat - 18 mg/kg
Remarks: (RTECS)
Acute toxicity estimate Inhalation - 4 h - 0.051 mg/l - dust/mist (Expert judgment)
Acute toxicity estimate Inhalation - Expert judgment - 4 h - 0.051 mg/l - dust/mist
Acute toxicity estimate Dermal - Expert judgment - 5.1 mg/kg (Expert judgment)
Acute toxicity estimate Dermal - 5.1 mg/kg
Remarks: (RTECS)
Acute toxicity estimate Inhalation - 4 h - 0.051 mg/l - dust/mist (Expert judgment)
Acute toxicity estimate Inhalation - Expert judgment - 4 h - 0.051 mg/l - dust/mist
Acute toxicity estimate Dermal - Expert judgment - 5.1 mg/kg (Expert judgment)
Acute toxicity estimate Dermal - 5.1 mg/kg
LD50 Oral - Rat - 18 mg/kg Remarks: (RTECS)
Acute toxicity estimate Inhalation - 4 h - 0,051 mg/l (Expert judgment)
Acute toxicity estimate Inhalation - Expert judgment - 4 h - 0,051 mg/l Acute toxicity estimate Dermal - Expert judgment - 5,1 mg/kg
(Expert judgment)
Acute toxicity estimate Dermal - 5,1 mg/kg
Skin corrosion/irritation
Acute toxicity estimate Inhalation - 4 h - 0,051 mg/l (Expert judgment)
Acute toxicity estimate Inhalation - Expert judgment - 4 h - 0,051 mg/l Acute toxicity estimate Dermal - Expert judgment - 5,1 mg/kg
(Expert judgment)
Acute toxicity estimate Dermal - 5,1 mg/kg
Classified based on available data. For more details, see section 2
No data available
Serious eye damage/eye irritation
Classified based on available data. For more details, see section 2
No data available
Respiratory or skin sensitization
Classified based on available data. For more details, see section 2
No data available
Germ cell mutagenicity
Classified based on available data. For more details, see section 2
No data available
Carcinogenicity
Classified based on available data. For more details, see section 2
No data available
Reproductive toxicity
Classified based on available data. For more details, see section 2
No data available
Specific target organ toxicity - single exposure
Classified based on available data. For more details, see section 2
No data available
Specific target organ toxicity - repeated exposure
May cause damage to organs through prolonged or repeated exposure.
- Kidney
- Kidney
May cause damage to organs through prolonged or repeated exposure. - Kidney
Aspiration hazard
Classified based on available data. For more details, see section 2
No data available
Toxicity
LD50 orally in Rabbit: 18 mg/kg LD50 dermal Rat 75 mg/kg
11.2 Additional Information
RTECS: OW5250000
Cough, Shortness of breath, Headache, Nausea, Vomiting, prolonged or repeated exposure can cause:, Neurotoxic effects.
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.
Mercury compounds have a cytotoxic and protoplasmatoxic effect. Intoxication symptoms: acute: contact with eye causes severe lesions. Swallowing and inhala- tion of dusts damages mucous membranes of gastrointestinal and respiratory tract (metallic taste, nausea, vomiting, abdominal pain, bloody diarrhoea, intestinal burns, glottal oedema, aspiration pneumonia); drop in blood pressure, cardiac dysrhythmia, circulatory collapse, and renal failure; chronic: inflammation of the mouth with loss of teeth and mercurial line. The principal signs manifest them- selves in the CNS (impaired speech, vision, hearing, and sensitivity, loss of memory, irritability, hallucinations, delirium inter alia).
This substance should be handled with particular care.
Cough, Shortness of breath, Headache, Nausea, Vomiting, prolonged or repeated exposure can cause:, Neurotoxic effects.
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.
Mercury compounds have a cytotoxic and protoplasmatoxic effect. Intoxication symptoms: acute: contact with eye causes severe lesions. Swallowing and inhala- tion of dusts damages mucous membranes of gastrointestinal and respiratory tract (metallic taste, nausea, vomiting, abdominal pain, bloody diarrhoea, intestinal burns, glottal oedema, aspiration pneumonia); drop in blood pressure, cardiac dysrhythmia, circulatory collapse, and renal failure; chronic: inflammation of the mouth with loss of teeth and mercurial line. The principal signs manifest them- selves in the CNS (impaired speech, vision, hearing, and sensitivity, loss of memory, irritability, hallucinations, delirium inter alia).
This substance should be handled with particular care.
Ecotoxicity
Components:
Mercury(II) iodide:
Toxicity to fishLC50 (Leuciscus idus (Golden orfe)): 0.13 mg/l Exposure time: 96 h Remarks: (Lit.)
Toxicity to daphnia and other aquatic invertebrates
EC50 (Daphnia magna (Water flea)): 0.0052 mg/l Exposure time: 48 h Remarks: (Lit.)
M-Factor (Acute aquatic toxicity)
10
M-Factor (Chronic aquatic toxicity)
100
Persistence and degradability
Components:
Mercury(II) iodide:
BiodegradabilityResult: Not readily biodegradable.
Bioaccumulative potential
Components:
Mercury(II) iodide:
Partition coefficient: noctanol/waterRemarks: Not applicable for inorganic substances
Mobility in soil
No data available
Other adverse effects
No data available
Disposal methods
Waste from residuesOffer surplus and non-recyclable solutions to a licensed disposal company.
International Regulations
IATA-DGR
UN/ID No. : UN 1638
Proper shipping name : Mercury iodide
Class : 6.1
Packing group : II
Labels : Division 6.1 - Toxic substances
Packing instruction (cargo aircraft) : 676
Packing instruction (passenger aircraft) : 669
Proper shipping name : Mercury iodide
Class : 6.1
Packing group : II
Labels : Division 6.1 - Toxic substances
Packing instruction (cargo aircraft) : 676
Packing instruction (passenger aircraft) : 669
IMDG-Code
UN number : UN 1638
Proper shipping name : MERCURY IODIDE
Class : 6.1
Packing group : II
Labels : 6.1
EmS Code : F-A, S-A
Marine pollutant : yes
Proper shipping name : MERCURY IODIDE
Class : 6.1
Packing group : II
Labels : 6.1
EmS Code : F-A, S-A
Marine pollutant : yes
Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable for product as supplied.
National regulation GB 6944/12268
UN number : UN 1638
Proper shipping name : MERCURY IODIDE
Class : 6.1
Packing group : II
Labels : 6.1
National regulation GB 6944/12268
UN number : UN 1638
Proper shipping name : MERCURY IODIDE
Class : 6.1
Packing group : II
Labels : 6.1
Special precautions for user
The transport classification(s) provided herein are for informational purposes only, and solely based upon the properties of the unpackaged material as it is described within this Safety Data Sheet. Transportation classifications may vary by mode of transportation, package sizes, and variations in regional or country regulations.
National regulatory information
Law on the Prevention and Control of Occupational Diseases
Regulations on Safety Management of Hazardous Chemicals
Catalogue of Hazardous Chemicals Identification of Major Hazard Installations for Hazardous Chemicals (GB 18218)
Listed
No. / Code Chemical name / Category Threshold quantity
J5 Acute toxic 500 t
Hazardous Chemicals for Priority Management
Listed under SAWS
Regulations on Occupational Labor Protection in the at workplaces where
Toxic Substances Are Used
Catalogue of Highly Toxic Chemicals
Not listed
Regulation of Environmental Management on the First Import of Chemicals and the Import and Export of Toxic Chemicals
China Severely Restricted Toxic Chemicals for Import and Export
Not listed
Rotterdam Convention (Prior Informed Consent)
Mercury(II) iodide
Regulation on the Administration of Precursor Chemicals
Catalogue and Classification of Precursor Chemicals
Not listed
Full text of other abbreviations
ACGIHUSA. ACGIH Threshold Limit Values (TLV)
CN BEI
China. Biological Occupational Exposure Indices
ACGIH / TWA AIIC - Australian Invent Transport by Land of Bra bw - Body weight; CMR Standard of the German List (Canada); ECx - Conc associated with x% respo Chemical Substances (Jap response; ERG - Emerge GLP - Good Laboratory P cer; IATA - International Construction and Equipm Half maximal inhibitory c tion; IECSC - Inventory o tional Maritime Dangerou Industrial Safety and H Standardization; KECI - K tration to 50 % of a test (Median Lethal Dose); MA lution from Ships; n.o.s. No Observed (Adverse) E fect Level; NOELR - No Norm; NTP - National Toxi icals; OECD - Organizatio fice of Chemical Safety a and Toxic substance; PIC stances; (Q)SAR - (Quant (EC) No 1907/2006 of th Registration, Evaluation, Accelerating Decompositi Chemical Substance Inve Thailand Existing Chemica States); UN - United Nat Transport of Dangerous WHMIS - Workplace Hazar
8-hour, time-weighted average ry of Industrial Chemicals
ANTT - National Agency for il
ASTM - American Society for the Testing of Materials
- Carcinogen, Mutagen or Reproductive Toxicant
DIN nstitute for Standardisation
DSL - Domestic Substances ntration associated with x% response
ELx - Loading rate se
EmS - Emergency Schedule
ENCS - Existing and New n)
ErCx - Concentration associated with x% growth rate cy Response Guide
GHS - Globally Harmonized System
actice
IARC - International Agency for Research on Canir Transport Association
IBC - International Code for the nt of Ships carrying Dangerous Chemicals in Bulk
IC50 ncentration
ICAO - International Civil Aviation Organiza- Existing Chemical Substances in China
IMDG - Interna- Goods
IMO - International Maritime Organization
ISHL alth Law (Japan)
ISO - International Organisation for rea Existing Chemicals Inventory
LC50 - Lethal Concenopulation
LD50 - Lethal Dose to 50% of a test population POL - International Convention for the Prevention of Pol- Not Otherwise Specified
Nch - Chilean Norm
NO(A)EC fect Concentration
NO(A)EL - No Observed (Adverse) Efbservable Effect Loading Rate
NOM - Official Mexican ology Program
NZIoC - New Zealand Inventory of Chemfor Economic Co-operation and Development
OPPTS - Ofd Pollution Prevention
PBT - Persistent, Bioaccumulative S - Philippines Inventory of Chemicals and Chemical Subtative) Structure Activity Relationship
REACH - Regulation European Parliament and of the Council concerning the uthorisation and Restriction of Chemicals
SADT - Selfn Temperature
SDS - Safety Data Sheet
TCSI - Taiwan tory
TDG - Transportation of Dangerous Goods
TECI s Inventory
TSCA - Toxic Substances Control Act (United ons
UNRTDG - United Nations Recommendations on the oods
vPvB - Very Persistent and Very Bioaccumulative
ous Materials Information System
ANTT - National Agency for il
ASTM - American Society for the Testing of Materials
- Carcinogen, Mutagen or Reproductive Toxicant
DIN nstitute for Standardisation
DSL - Domestic Substances ntration associated with x% response
ELx - Loading rate se
EmS - Emergency Schedule
ENCS - Existing and New n)
ErCx - Concentration associated with x% growth rate cy Response Guide
GHS - Globally Harmonized System
actice
IARC - International Agency for Research on Canir Transport Association
IBC - International Code for the nt of Ships carrying Dangerous Chemicals in Bulk
IC50 ncentration
ICAO - International Civil Aviation Organiza- Existing Chemical Substances in China
IMDG - Interna- Goods
IMO - International Maritime Organization
ISHL alth Law (Japan)
ISO - International Organisation for rea Existing Chemicals Inventory
LC50 - Lethal Concenopulation
LD50 - Lethal Dose to 50% of a test population POL - International Convention for the Prevention of Pol- Not Otherwise Specified
Nch - Chilean Norm
NO(A)EC fect Concentration
NO(A)EL - No Observed (Adverse) Efbservable Effect Loading Rate
NOM - Official Mexican ology Program
NZIoC - New Zealand Inventory of Chemfor Economic Co-operation and Development
OPPTS - Ofd Pollution Prevention
PBT - Persistent, Bioaccumulative S - Philippines Inventory of Chemicals and Chemical Subtative) Structure Activity Relationship
REACH - Regulation European Parliament and of the Council concerning the uthorisation and Restriction of Chemicals
SADT - Selfn Temperature
SDS - Safety Data Sheet
TCSI - Taiwan tory
TDG - Transportation of Dangerous Goods
TECI s Inventory
TSCA - Toxic Substances Control Act (United ons
UNRTDG - United Nations Recommendations on the oods
vPvB - Very Persistent and Very Bioaccumulative
ous Materials Information System
Disclaimer:
The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.