溴化钾，ACS

Description

Potassium bromide is identified by CAS 7758-02-3, molecular formula KBr and molecular weight 117.88 g/mol. UNII OSD78555ZM; ChEBI 32030; InChIKey IOLCXVTUBQKXJR-UHFFFAOYSA-M. Boiling Point: 2615 °F at 760 mmHg (NTP, 1992); Boiling Point: 1435 °C; Boiling Point: 1435 °C @760 [mm Hg].

Identification

CAS Registry Number	7758-02-3
PubChem CID	253877
Molecular formula	KBr
Molecular weight	117.88 g/mol
IUPAC name	potassium bromide
InChIKey	IOLCXVTUBQKXJR-UHFFFAOYSA-M
UNII (FDA)	OSD78555ZM
ChEBI ID	CHEBI:32030

Computed Descriptors

Molecular Weight	119.00
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	117.88204
Monoisotopic Mass	117.88204
Topological Polar Surface Area	0
Heavy Atom Count	2
Formal Charge	0
Complexity	2

Physical & Chemical Properties

Boiling Point	2615 °F at 760 mmHg (NTP, 1992)
Boiling Point	1435 °C
Boiling Point	1435 °C @760 [mm Hg]
Melting Point	1346 °F (NTP, 1992)
Melting Point	730 °C
Melting Point	734 °C
Solubility	In water, 67.8 g/100 g at 25 °C
Density	2.74 g/cu cm at 25 °C
Density	2.75 @25 °C
Vapor Pressure	1 mmHg at 1463 °F (NTP, 1992)

Physical description & handling notes

• Potassium bromide appears as odorless colorless crystals or white crystalline powder or white granular solid with a pungent bitter saline taste. Aqueous solutions are neutral (pH about 7). (NTP, 1992)
• Colorless or white solid; Slightly hygroscopic; [HSDB] White odorless powder; [MSDSonline]
• Colorless crystals or white granules or powder
• Colorless cubic crystals
• White, crystalline powder or granules
• Odorless

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: WASHING OR SURFACE REMOVAL AGENT FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
GHS notification summary	3.2% (17 / 538)

GHS Hazard Classification

GHS notification summary	3.2% (17 / 538)
Reported hazard statements	H315 (12.6%), H319 (91.4%), H335 (12.3%)

Documented Uses

• Photographic Processing [Category: Other]
• Intalagio printing [Category: Hobbies]
• Lithography printing [Category: Hobbies]
• Potassium bromide may be utilized for the production of photographic-grade silver bromide. It also finds use in process engraving, lithography ... Other uses for potassium bromide are in clear completion fluids in the petroleum industry, as a pharmaceutical intermediate, and in the manufacture of fibers.
• For more Uses (Complete) data for Potassium bromide (6 total), please visit the HSDB record page.
• Widely used as an anticonvulsant and a sedative in the late 19th and early 20th centuries, but today is only used in veterinary medicine, as an antiepileptic medication for dogs and cats.

Synonyms

POTASSIUM BROMIDE; 7758-02-3; Bromide salt of potassium; Potassium bromide (KBr); Bromure de potassium; Kaliumbromid; Kalii bromidum; Kali bromatum; Tripotassium tribromide; NSC-77367; OSD78555ZM; DTXSID5025946; CHEBI:32030; bromopotassium; Pot brom; K-BroVet

Frequently Asked Questions

What are the CAS number and molecular formula of Potassium bromide?

CAS 7758-02-3; molecular formula KBr; molecular weight 117.88 g/mol.

What other names is Potassium bromide known by?

POTASSIUM BROMIDE, 7758-02-3, Bromide salt of potassium, Potassium bromide (KBr), Bromure de potassium, Kaliumbromid.

What is the regulatory status of Potassium bromide?

Documented regulatory listings: FDA Substance added to food: WASHING OR SURFACE REMOVAL AGENT; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Potassium bromide classified as hazardous?

3.2% of GHS notifications report no hazard classification (17 of 538).

What are the key physical properties of Potassium bromide?

Boiling Point: 2615 °F at 760 mmHg (NTP, 1992); Boiling Point: 1435 °C; Boiling Point: 1435 °C @760 [mm Hg]; Melting Point: 1346 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.