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    7758-02-3
    ???:
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    ???(??):
    ????;??????????????????(1mg/ml?????);??????;?????;????????(1MG/ML????);?????;??????(KBR);??????,??ACS;????????;????????;??????????????????(1mg/ml?????)(BROMIDESTANDARDSOLUTION(1mg/mlBROMIDE));???? ???
    ???:
    Potassium bromide
    ???(??):
    KBr;BROMINE TS;Kaliumbromid;Battery Grade;BROMINE WATER;BROMINE LIQUID;KALII BROMIDUM;BROMIDE BROMATE;POTASSIUM BROMIDE;bromuredepotassium
    CBNumber:
    CB2854302
    ???:
    BrK
    ??? ??:
    119
    MOL ??:
    7758-02-3.mol

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    734 °C (lit.)
    ?? ?
    1435 °C/1 atm (lit.)
    ??
    3.119 g/mL at 25 °C(lit.)
    ?? ??
    7.14 (vs air)
    ???
    175 mm Hg ( 20 °C)
    ???
    1.559
    ???
    1435°C
    ?? ??
    Store at +5°C to +30°C.
    ???
    H2O: 1 M at 20 °C, clear, colorless
    ??? ??
    random crystals
    ??
    White
    Specific Gravity
    2.75
    ??????(pH)
    5.0-8.8 (25℃, 50mg/mL in H2O)
    ???
    650 g/L (20 ºC)
    ?? ??(λmax)
    λ: 260 nm Amax: 0.01
    λ: 280 nm Amax: 0.01
    ??
    Hygroscopic
    Merck
    14,7618
    ???
    Stable. Incompatible with strong oxidizing agents, strong acids, bromine trifluoride and bromine trichloride.
    InChIKey
    IOLCXVTUBQKXJR-UHFFFAOYSA-M
    CAS ??????
    7758-02-3(CAS DataBase Reference)
    NIST
    Potassium bromide(7758-02-3)
    EPA
    Potassium bromide (7758-02-3)
    ??
    • ?? ? ?? ??
    • ?? ? ???? ?? (GHS)
    ??? ?? Xi
    ?? ???? ?? 36/37/38-36
    ????? 26-45-61-7/9-39-36
    ????(UN No.) UN 1744 8/PG 1
    WGK ?? 2
    RTECS ?? TS7650000
    F ?????? 3-10
    TSCA Yes
    HS ?? 28275100
    ?? ?? ??? 7758-02-3(Hazardous Substances Data)
    ?? LD50 orally in Rabbit: > 2000 mg/kg
    ???? ?? KE-29079
    ????(GHS):
    ?? ?: Warning
    ??·?? ??:
    ?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
    H303 ??? ??? ? ?? ?? ?? ?? - ?? ?? 5 P312
    H315 ??? ??? ??? ????? ?? ????? ?? 2 ?? P264, P280, P302+P352, P321,P332+P313, P362
    H319 ?? ?? ??? ??? ?? ? ?? ?? ??? ?? ?? 2A ?? P264, P280, P305+P351+P338,P337+P313P
    H335 ?? ???? ??? ? ?? ?? ???? ?? - 1? ??;???? ?? ?? 3 ??
    ??????:
    P261 ??·?·??·???·??·...·????? ??? ????.
    P280 ????/???/???/?????? ?????.
    P304+P340 ???? ??? ??? ?? ??? ??? ???? ?? ??? ??? ????.
    P305+P351+P338 ?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
    P337+P313 ?? ?? ??? ???? ???? ??· ??? ????.
    P405 ???? ?????.
    NFPA 704
    0
    1 0

    ???? ?? MSDS


    Potassium bromide

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    ??: ??, ??: ?? ?? ?? ??, ??: ??, pH: 5~8(5w/v% sol, 25℃), ???/???: 734℃, ???: 1435℃, ???: 1mmHg(795℃), ???: 66.7g/100mL(25℃), ??: 2.75(20℃), ???: 119.00.

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    White, crystalline granules or pow- der; pungent, strong, bitter, saline taste; somewhat hygroscopic.Solu- ble in water and glycerol; slightly soluble in alcohol and ether.

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    This white crystal was made by the action of bromine on hot potassium hydroxide solution. It is soluble in water but much less so in alcohol. Potassium bromide was used as a secondary halide in combination with an iodide in the paper negative processes, the albumen on glass process, and the wet collodion processes. When silver bromide gelatin emulsion was invented, potassium bromide was the primary halide. It was also used in combination with either bichloride of mercury, copper sulfate, or potassium ferricyanide in photographic bleaches and as a restrainer in alkaline developers used for gelatin plates and developing-out papers.

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    Potassium bromide (KBr) is used in photography and as a medical sedative.

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    manufacture of photographic papers and plates; process engraving.

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    ChEBI: A metal bromide salt with a K(+) counterion.

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    potassium bromide: A white orcolourless crystalline solid, KBr,slightly hygroscopic and soluble inwater and very slightly soluble inethanol; cubic; r.d. 2.75; m.p. 734°C;b.p. 1435°C. Potassium bromide maybe prepared by the action of bromineon hot potassium hydroxide solutionor by the action of iron(III) bromideor hydrogen bromide on potassiumcarbonate solution. It is used widelyin the photographic industry and isalso used as a sedative. Because of itsrange of transparency to infrared radiation,KBr is used both as a matrixfor solid samples and as a prism materialin infrared spectroscopy.

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    Odorless colorless crystals or white crystalline powder or white granular solid with a pungent bitter saline taste. Aqueous solutions are neutral (pH about 7).

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    Water soluble.

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    Potassium bromide is not in generally strongly reactive. A weak reducing agent, incompatible with oxidizing agents. Also incompatible with salts of mercury and silver. Violent reactions occur with bromine trifluoride. May react with nitrous ether spirit, many alkaloidal salts and starch. May also react with acids . Reacts with concentrated sulfuric acid to generate fumes of hydrogen bromide.

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    Toxic by ingestion and inhalation

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    Flash point data for Potassium bromide are not available; however, Potassium bromide is probably nonflammable.

    Biochem/physiol Actions

    Potassium bromide (KBr) is used as an anticonvulsant and sedative. KBr is used for optical windows and prisms. KBr is transparent in the wide wavelength range from near ultraviolet to long wave infrared. It is employed in the sample preparation for infrared transmission spectra.

    Safety Profile

    Moderately toxic by ingestion and intraperitoneal routes. Large doses can cause central nervous system depression. Prolonged inhalation may cause skin eruptions. Mutation data reported. Violent reaction with BrF3. When heated to decomposition it emits toxic fumes of K2O and Br-. See also BROMIDES.

    Veterinary Drugs and Treatments

    Bromides are used both as primary therapy and as adjunctive therapy to control seizures in dogs that are not adequately controlled by phenobarbital (or primidone) alone (when steady state trough phenobarbital levels are >30 mcg/mL for at least one month). While historically bromides were only recommended for use alone in patients suffering from phenobarbital (or primidone) hepatotoxicity, they are more frequently used as a drug of first choice.
    Although not frequently used, bromides are also considered suitable by some for use in cats with chronic seizure disorders, but cats may be more susceptible to the drug’s adverse effects.

    Purification Methods

    Crystallise the bromide from distilled water (1mL/g) between 100o and 0o. Wash it with 95% EtOH, followed by Et2O. Dry it in air, then heat it at 115o for 1hour, pulverize it, then heat it in a vacuum oven at 130o for 4hours. It has also been crystallised from aqueous30% EtOH, or EtOH, and dried over P2O5 under vacuum before heating in an oven.

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