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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 259Generated: October 27, 2026

Bromide ion

Br- · BROMIDE ION · 6XY · 4LJ · 1d2v · VLA-2 · VLAA2 · HPA-5

https://huagongshe.com/en/chemical/259

Bromide ion molecular structure

Identifiers & Physical Properties

CAS No.24959-67-9
Molecular formulaBr-
Average molar mass79.9 g/mol
Monoisotopic mass78.91834 g/mol
SMILES[Br-]
InChIKeyCPELXLSAUQHCOX-UHFFFAOYSA-M
PubChem CID259
ChEMBLCHEMBL1231461
ChEBICHEBI:15858
DTXSIDDTXSID6043967

Chemical & Physical Properties

XLogP1
Topological polar surface area0
Hydrogen bond donors0
Hydrogen bond acceptors1
Rotatable bonds0
Heavy atoms1
Formal charge-1
Complexity0
Chemical classesMajor ion
Solubility35 mg/mL at 20 °C
Melting point-7.25 °C
Physical DescriptionLiquid
Storage conditions2-8°C
Physical stateLiquid
CAS DataBase Reference24959-67-9(CAS DataBase Reference)
FDA UNII952902IX06
EPA Substance Registry SystemBromide (24959-67-9)
Safety statements (S)22-24/25
Water hazard class (WGK)3

Safety & Regulations

TreatmentIn case of acute exposure, bromide salts should be washed with water from any areas of dermal or ocular contact. If inhaled, treatment is mainly symptomatic and may include maintaining an adequate airway, administering oxygen, antibronchospasm therapy, and/or antibiotics. (L626)
Health effectsThe bromide ion is a central nervous system depressant and chronic exposure produces neuronal effects. This is called bromism and can result in central reactions reaching from somnolence to coma, cachexia, exicosis, loss of reflexes or pathologic reflexes, clonic seizures, tremor, ataxia, loss of neural sensitivity, paresis, papillar edema of the eyes, abnormal speech, cerebral edema, delirium, aggressiveness, and psychoses. (L625, L626, L627)
Exposure routesOral (L626)inhalation (L626)dermal (L626)
Toxicity summaryThe bromide ion is also known to affect the central nervous system, causing bromism. This is believed to be a result of bromide ions substituting for chloride ions in the in actions of neurotransmitters and transport systems, thus affecting numerous synaptic processes. (L626, L627, A543)
Signs and SymptomsThe bromide ion is a central nervous system depressant producing ataxia, slurred speech, tremor, nausea, vomiting, lethargy, dizziness, visual disturbances, unsteadiness, headaches, impaired memory and concentration, disorientation and hallucinations. (L626, L627)
Carcinogen ClassificationNo indication of carcinogenicity (not listed by IARC). (L135)
Toxicity DataLD50: 85.2 ppm (Intraperitoneal, Rat) (A542) LD50: 2600 mg/kg (Oral, Rat) (A542) LC50: 750 ppm over 9 minutes (Inhalation, Mouse) (A542)
USGS Health-Based Screening Levels for Evaluating Water-QualityBromideMajor ionSmith, C.D. and Nowell, L.H., 2024. Health-Based Screening Levels for evaluating water-quality data (3rd ed.). DOI:10.5066/F71C1TWP
Water hazard class (WGK)3
Safety statements (S)22-24/25

Applications & Uses

Uses

BROMIDE is used as medications for ENT (Ear, Nose, and Throat).