MERCURIC BROMIDE

Safety Data Sheet
Emergency Telephone Number: CHEMTREC 1-800-424-9300       For Information call: DUDLEY 732-886-3100       
      DUDLEY CORPORATION
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Effective Date: January 1, 2025	
1. PRODUCT: CAS No.: 7789-47-1	E-C No.:232-169-3 Weight:  360.40g/mol 	Formula: Br2Hg
2. HAZARDS: GHS Class: Acute aquatic toxicity (Cat 1) Acute toxicity, Oral (Cat 2)	 Chronic aquatic toxicity (Cat 1) Acute toxicity, Inhalation (Cat 1) Acute toxicity, Dermal (Cat 1) Specific target organ toxicity - repeated exposure (Cat 2)
 Pictogram: 			          	         
Signal Word:         DANGER
HAZARD STATEMENT: H300+H310+H330: Fatal if swallowed, in contact with skin or if inhaled. 	P373: May cause damage to organs through prolonged or repeated exposure.  H410: Very toxic to aquatic life with long lasting effects.
PRECAUTIONARY STATEMENT: P260: Do not breathe dust/fume/gas/mist/vapors/spray. P262: Do not get in eyes, on skin, or on clothing. P264: wash skin thoroughly after handling. P270: Do not drink, eat, smoke, when using this product. P271: Use only outdoors or in a well-ventilated area. P273: Avoid release into environment.	P405: Store locked up. P280: Wear protective gloves/eye & face protection. P284: Wear respiratory protection. P330: Rinse mouth. P301 + P310: If swallowed: Immediately Call Poison Center or doctor/physician. P302 + P350: If on skin gently wash with plenty of soap & water. P304 + P340: If inhaled: remove to fresh air and keep at rest in a position comfortable for breathing. P310: Immediately Call Poison Center or doctor/physician. P391: Collect spillage P314: Get medical attention if you feel unwell.  P362; Take off immediately & wash all contaminated clothing.  P403 + P233: Store in a well-ventilated place. Keep container tightly closed. P501: Dispose of contents/container to an approved waste disposal plant.

HMIS Class: Health hazard  4, Flammability   0,  Physical hazards   0			
NFPA Rating: Health hazard  4, Fire     0, Reactivity hazard   0
2.3: Other Hazards: none

3. COMPOSITION: 
Chemical 					 CAS No.	 	Percent		
Mercury dibromide				 7789-47-1   	98% 

4. FIRST AID: Eyes: Rinse immediately with plenty of water 15 min and seek medical advice. Skin: Rinse with plenty of 
soap & water and seek medical advice. Ingestion: Do not induce vomiting without medical advice. Rinse with water. 
Consult physician. Inhalation: Move to fresh air.  Consult a physician. Physician: Treat symptomatically & supportively.

5. FIRE FIGHTING: Info:  Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH & full PPE.  Irritating & highly toxic gases may be generated by thermal decomp/combustion.  Substance is noncombustible. Hazards:  Hydrogen bromide gas & Mercury oxides. Extinguishing:  Use water spray, dry chemicals, carbon dioxide, or alcohol-resistant foam. 

6. ACCIDENTAL RELEASE: Info:  Use proper PPE as indicated in Section 8. Spills: Vacuum or sweep up material and place into a suitable disposal container.  Avoid generating dusty conditions.  Sprinkle area with sulfur or calcium polysulfide to suppress mercury.  

7. HANDLING & STORAGE: Handling:  Wash thoroughly after handling.  Minimize dust generation and accumulation.  Do not get in eyes, on skin, or on clothing.  Keep container tightly closed.  Do not ingest or inhale. Storage:  Store in a tightly closed container, store in a cool, dry, ventilated area away from incompatibles..  Protect from physical damage and direct sunlight. Follow strict hygiene practices. 

8. EXPOSURE:  Facilities storing or utilizing this material should be equipped with an eyewash facility and safety shower.  Use adequate ventilation to keep airborne concentrations low.
Chemical 	    	  ACGIH	                 	NIOSH		  	OSHA – Final / Vacated PEL’s
			 0.025mg/m3 TWA	 0.05 & 0.1mg/m3 TWA	                      0.1mg/m3 TWA

PPE: Eyes:  Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA’s eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin:  Wear appropriate protective gloves to prevent skin exposure. 0.11mm thick nitrile. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators:  Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149.  Use a NIOSH/MSHA or European Standard EN149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Hygiene measures: Follow general industrial hygiene and health practices. 

9. PHYSICAL & CHEM: Appearance: White to faint yellow powder. Relative Density: 6.050g/cm3. 
Boiling Pt: 322˚C (612˚F) Melting Pt: 236°C (457°F) Vapor Pressure: 1 hPa (1mmHg) at 136.5˚C (277.7˚F) 

10. STABILITY & REACTIVITY: Stability: Stable under ordinary conditions. Light sensitive. Decomposes on exposure to light. Avoid:  Light, heat, incompatibles Incompatibilities:  Strong oxidizing agents, strong acids, sodium, potassium. Haz Decomp.:  Hydrogen bromide gas, mercury/mercury oxides. for fire see section 5

11. TOXICOLOGICAL INFO:  RTECS: OV7415000 LD50/LC50:  No data
Carcinogenicity:  Not listed by ACGIH, NIOSH, NTP, IARC, or OSHA. Studies: Stomach irregularities 

12. ECOLOGICAL INFO: Environmental Toxicity: very toxic to aquatic life

13. DISPOSAL CONSIDERATIONS: Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste.  US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3.  Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification. Contact a licensed professional waste disposal service to dispose of this material. 
RCRA P-Series:  None listed. RCRA U-Series:  None listed. 

14. TRANSPORT REGULATIONS:  Domestic (Land, D.O.T.): UN 1634, Mercury bromides, 6.1, II, ERG 154
IMDG: UN 1634, MERCURY BROMIDES, 6.1, II	Marine pollutant
IATA: UN 1634, Mercury bromides, 6.1, II

15. REGULATORY INFO: SARA 311/312:  Acute Health Hazard, Chronic Health Hazard.
Section 302 Extremely Hazardous Substances None of the chemicals in this material have an RQ & TPQ.
Section 313 No chemicals are reportable under Section 313.
STATE CAS# 7789-47-1 is not present on state lists from CA, MN, MA, FL. 
PA & NJ Right to Know: CAS# 7789-47-1:  Mercury dibromide Rev. 08/11/1989
California Prop.65: WARNING: This product contains a chemical known to the State of CA to cause birth defects or other reproductive harm CAS# 7789-47-1:  Mercury dibromide Rev. 08/11/1989

EUROPEAN/INTERNATIONAL REGULATIONS European Labeling in Accordance with EC Directives
Hazardous symbols:     T + N   WGK (Water Danger/Protection) CAS# 7789-47-1: 3
Canada – DSL/NDSL:  CAS# 7789-47-1 is listed on Canada’s DSL List.   Canada – WHMIS:  Not available.
Canadian Ingredient Disclosure List CAS# 7789-47-1 is listed on the Canadian Ingredient Disclosure List.

16. DISCLAIMER INFO: DUDLEY CORPORATION provides the information herein in good faith but makes no representation as to its comprehensiveness or accuracy. This document is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this.  Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose. DUDLEY CORPORATION makes no representations or warranties, either expressed or implied, including without limitation and warranties of merchantability, fitness for a particular purpose with respect to the information set forth herein or to the product to which the information refers. Accordingly, DUDLEY CORPORATION will not be responsible for damages resulting from the use of or reliance upon this information.