Reagents, B

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  • Benzyl chloroformate, 95%, stab. with ca 0.1% sodium carbonate

    Alfa Aesar

    Synonym(s): Carbobenzoxy chloride, Chloroformic acid benzyl ester Formula: C8H7ClO2 Formula weight: 170.60 Purity: 95%, stab. with ca 0.1% sodium carbonate CAS Number: 501-53-1 UN Number: UN1739 Hazard Class: 8 Packing Group: I Harmonized Tariff Code:  2915.90 Hazard…

  • Bromine liquid, ACS, 99.5%

    Alfa Aesar

    Purity: 99.5% CAS Number: 7726-95-6 UN Number: UN1744 Hazard Class: 8 Packing Group: I Harmonized Tariff Code:  2801.30 Hazard Statements: H330-H314 Fatal if inhaled. Causes severe skin burns and eye damage. Precautionary Statements: …

  • Bromine liquid, 99.8%

    Alfa Aesar

    Purity: 99.8% CAS Number: 7726-95-6 UN Number: UN1744 Hazard Class: 8 Packing Group: I Harmonized Tariff Code:  2801.30 Hazard Statements: H330-H314 Fatal if inhaled. Causes severe skin burns and eye damage. Precautionary Statements: …

  • 3-Bromo-5-iodopyridine, 95%

    Alfa Aesar

  • 2-Bromo-6-fluorobenzaldehyde, 98%

    Alfa Aesar

  • 1,4-Butanediol, 99%

    Alfa Aesar

    Synonym(s): 1,4-Butylene glycol, Tetramethylene glycol Formula: HO(CH2)4OH Formula weight: 90.12 Purity: 99% CAS Number: 110-63-4 Harmonized Tariff Code:  2905.39 Hazard Statements: H302 Harmful if swallowed. Precautionary Statements: P264-P270-P301+P312-P330-P501a Wash…

  • Barium bis(trifluoromethylsulfonyl)imide

    Alfa Aesar

    Synonym(s): Barium triflimide, Barium bis(trifluoromethanesulfonimide) Formula: C4BaF12N2O8S4 Formula weight: 697.60 CAS Number: 168106-22-7 UN Number:

  • Barium oxide, 99.5% (metals basis excluding Sr), Sr <500ppm

    Alfa Aesar

    Formula: BaO Formula weight: 153.33 Purity: 99.5% (metals basis excluding Sr), Sr CAS Number: 1304-28-5 UN Number: UN1884 Hazard Class: 6.1 Packing Group: III Harmonized Tariff Code:  2816.40 Hazard Statements: H302-H332 Harmful if swallowed. Harmful if inhaled. …

  • BML-259, 98%

    Alfa Aesar

  • Benzethonium chloride, 97%

    Alfa Aesar

    Synonym(s): Hyamine 1622, Phemerol chloride Formula: C27H42ClNO2 Formula weight: 448.10 Purity: 97% CAS Number: 121-54-0 UN Number: UN1759 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2923.90 Hazard Statements: H301-H314-H318 Toxic if swallowed. Causes…

  • Buffer solution, pH 13.00 (^+0.01 @ 25°C), No Color, Specpure®, NIST Traceable

    Alfa Aesar

    Harmonized Tariff Code:  3822.00 Hazard Statements: H315-H319 Causes skin irritation. Causes serious eye irritation. Precautionary Statements: P280-P305+P351+P338-P362-P321-P332+P313-

  • Bromobenzene, 99%

    Alfa Aesar

    Formula: C6H5Br Formula weight: 157.02 Purity: 99% CAS Number: 108-86-1 UN Number: UN2514 Hazard Class: 3 Packing Group: III Harmonized Tariff Code:  2903.99 Hazard Statements: H226-H315 Flammable liquid and vapour. Causes skin irritation. Precautionary Statements: …

  • Beryllium lump, irregular, 3-38mm (0.1-1.5in), 99.5% (metals basis)

    Alfa Aesar

    Purity: 99.5% (metals basis) CAS Number: 7440-41-7 Harmonized Tariff Code:  8112.12 Hazard Statements: H301-H330-H350-H372-H315-H319-H317-H335 Toxic if swallowed. Fatal if inhaled. May cause cancer. Causes damage to organs through prolonged or repeated exposure. Causes skin irritation.…

  • Barium chloride dihydrate, 99+%

    Alfa Aesar

    Formula: BaCl2 2H2O Formula weight: 244.28 (208.25anhy) Purity: 99+% CAS Number: 10326-27-9 UN Number: UN1564 Hazard Class: 6.1 Packing Group: III Harmonized Tariff Code:  2827.39 Hazard Statements: H301-H331 Toxic if swallowed. Toxic if inhaled. Precautionary…

  • 1-Butanol, ACS, 99.4+%

    Alfa Aesar

    Synonym(s): n-Butyl alcohol Formula: CH3(CH2)3OH Formula weight: 74.12 Purity: 99.4+% CAS Number: 71-36-3 UN Number: UN1120 Hazard Class: 3 Packing Group: III Harmonized Tariff Code:  2905.13 Hazard Statements: H318-H226-H302-H335-H336-H315 Causes serious eye damage.…

  • Bromophenol Blue, ACS

    Alfa Aesar

    Formula: C19H10Br4O5S Formula weight: 669.98 CAS Number: 115-39-9 Harmonized Tariff Code:  2934.99

  • 1-(2-Bromoethyl)naphthalene, 97%

    Alfa Aesar

    Formula: C12H11Br Formula weight: 235.13 Purity: 97% CAS Number: 13686-49-2 Harmonized Tariff Code:  2903.99 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Precautionary Statements: …

  • Benzyl alcohol, 99%

    Alfa Aesar

    Formula: C7H8O Formula weight: 108.14 Purity: 99% CAS Number: 100-51-6 Harmonized Tariff Code:  2906.21 Hazard Statements: H302-H332 Harmful if swallowed. Harmful if inhaled. Precautionary Statements: P261-P264-P304+P340-P301+P312-P312-P501a Avoid breathing…

  • 4'-tert-Butylacetophenone, 98%

    Alfa Aesar

    Formula: C12H16O Formula weight: 176.26 Purity: 98% CAS Number: 943-27-1 Packing Group: III Harmonized Tariff Code:  2914.39

  • Benzamide, 98+%

    Alfa Aesar

    Formula: C7H7NO Formula weight: 121.14 Purity: 98+% CAS Number: 55-21-0 Harmonized Tariff Code:  2924.29 Hazard Statements: H341-H302 Suspected of causing genetic defects. Harmful if swallowed. Precautionary Statements: P280h Wear protective gloves/clothing. Risk Phrases: …

  • Bromoethane, 98%

    Alfa Aesar

    Synonym(s): Ethyl bromide Formula: C2H5Br Formula weight: 108.97 Purity: 98% CAS Number: 74-96-4 UN Number: UN1891 Hazard Class: 6.1 Packing Group: II Harmonized Tariff Code:  2903.39 Hazard Statements: H225-H351-H302-H332 Highly flammable liquid and vapour. Suspected…

  • BLOTTO antifoam in PBS

    Alfa Aesar

    Harmonized Tariff Code:  3822.00

  • Bromocresol Green

    Alfa Aesar

    Synonym(s): Bromcresol Green CAS Number: 76-60-8 MDL: MFCD00005874 EINECS: 200-972-8 Formula: C21H14Br4O5S Formula Weight: 698.02 Melting Point: ca 225° dec.. Notes Transition interval: pH 3.8 (yellow) to…

  • Buffer solution, pH 12.00 (^+0.01 @ 25^oC), No Color, Specpure r, NIST Traceable

    Alfa Aesar

    Harmonized Tariff Code:  3822.00

  • 4-Bromoaniline, 98+%

    Alfa Aesar

    Formula: C6H6BrN Formula weight: 172.03 Purity: 98+% CAS Number: 106-40-1 UN Number: UN2811 Hazard Class: 6.1 Packing Group: III Harmonized Tariff Code:  2921.42 Hazard Statements: H311-H373-H302-H332-H315-H319 Toxic in contact with skin. May cause damage to organs through…

  • Boron trifluoride-dimethanol complex, 50-52% w/w boron trifluoride

    Alfa Aesar

    Formula: BF3 2CH3OH Formula weight: 131.89 CAS Number: 2802-68-8 UN Number: UN2922 Hazard Class: 8 Packing Group: II Harmonized Tariff Code:  2942.00 Hazard Statements: H300-H310-H330-H314-H318-H227 Fatal if swallowed. Fatal in contact with skin. Fatal if inhaled. Causes…

  • Barium hydroxide octahydrate, ACS, 98+%

    Alfa Aesar

    Formula: BaH2O2 8H2O Formula weight: 315.48 (171.36anhy) Purity: 98+% CAS Number: 12230-71-6 UN Number: UN3262 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2816.40 Hazard Statements: H314-H318-H302-H332 Causes severe skin burns and eye damage. Causes serious…

  • Benzoic acid, 99%

    Alfa Aesar

    Formula: C7H6O2 Formula weight: 122.12 Purity: 99% CAS Number: 65-85-0 Harmonized Tariff Code:  2916.31 Hazard Statements: H318-H302-H335 Causes serious eye damage. Harmful if swallowed. May cause respiratory irritation. Precautionary Statements: P280f-P305+P351+P338 Wear…

  • Bacitracin

    Alfa Aesar

    Formula: C66H103N17O16S Formula weight: 1421.60 CAS Number: 1405-87-4 Harmonized Tariff Code:  2941.90

  • Bisphenol A diglycidyl ether

    Alfa Aesar

    Synonym(s): Bis(4-glycidyloxyphenyl)propane, 4,4'-Isopropylidenediphenol diglycidyl ether Formula: C21H24O4 Formula weight: 340.42 CAS Number: 1675-54-3 Harmonized Tariff Code:  2909.50 Hazard Statements: H315-H319-H317 Causes skin irritation. Causes serious eye irritation. May…

  • Bis(2-ethylhexyl) phosphate, 95%

    Alfa Aesar

    Synonym(s): DEHPA, Di(2-ethylhexyl)phosphoric acid Formula: C16H35O4P Formula weight: 322.43 Purity: 95% CAS Number: 298-07-7 UN Number: UN1902 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2919.90 Hazard Statements: H314-H318-H312 Causes severe skin burns…

  • Butyric acid, 99+%

    Alfa Aesar

    Formula: C4H8O2 Formula weight: 88.11 Purity: 99+% CAS Number: 107-92-6 UN Number: UN2820 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2915.60 Hazard Statements: H311-H314-H318-H227 Toxic in contact with skin. Causes severe skin burns and eye damage. Causes…

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