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  • D-(+)-Biotin, 98+%

    Alfa Aesar

    Synonym(s): Vitamin H Formula: C10H16N2O3S Formula weight: 244.32 Purity: 98+% CAS Number: 58-85-5 Harmonized Tariff Code:  2936.29

  • Boron trifluoride, 99+%

    Alfa Aesar

    Synonym(s): Boron fluoride Formula: BF3 Formula weight: 67.81 Purity: 99+% CAS Number: 7637-07-2 UN Number: UN1008 Hazard Class: 2.3 Harmonized Tariff Code:  2812.90 Hazard Statements: H330-H314-H318 Fatal if inhaled. Causes severe skin burns and eye damage. Causes serious…

  • Benzamidine hydrochloride hydrate, 98%, water ca 10-14%

    Alfa Aesar

    Formula: C7H8N26 HCl xH2O Formula weight: 156.62(anhy) Purity: 98%, water ca 10-14% CAS Number: 206752-36-5 Harmonized Tariff Code:  2925.19 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Precautionary…

  • 1-Bromopropane, 99%

    Alfa Aesar

    Synonym(s): n-Propyl bromide Formula: C3H7Br Formula weight: 123.00 Purity: 99% CAS Number: 106-94-5 UN Number: UN2344 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2903.39 Hazard Statements: H225-H360-H373-H315-H319-H335-H336 Highly flammable liquid and…

  • 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: …

  • Bis[3-(triethoxysilyl)propyl]tetrasulfide, S 22.3% (typical)

    Alfa Aesar

    Formula: ((CH3CH2O)3SiCH2CH2CH2SS)2 Formula weight: 538.94 CAS Number: 40372-72-3 Harmonized Tariff Code:  2931.90 Hazard Statements: H315-H319-H335-H227 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Combustible liquid. Precautionary…

  • tert-Butyl alcohol, anhydrous, 99.5%

    Alfa Aesar

    Synonym(s): 2-Methyl-2-propanol, tert-Butanol Formula: C4H10O Formula weight: 74.12 Purity: 99.5% CAS Number: 75-65-0 UN Number: UN1120 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2905.14 Hazard Statements: H225-H332-H319-H335 Highly flammable liquid and…

  • Betaine hydrochloride, 99%

    Alfa Aesar

    Synonym(s): (Carboxymethyl)trimethylammonium chloride Formula: (CH3)3NCH2CO2 HCl Formula weight: 153.61 Purity: 99% CAS Number: 590-46-5 Harmonized Tariff Code:  2923.90 Hazard Statements: H319 Causes serious eye irritation. Precautionary Statements: …

  • tert-Butyl alcohol, anhydrous, 99.5%, packaged under Argon in resealable…

    Alfa Aesar

    Synonym(s): 2-Methyl-2-propanol, tert-Butanol Formula: C4H10O Formula weight: 74.12 Purity: 99.5%, packaged under Argon in resealable ChemSeal^t bottles CAS Number: 75-65-0 UN Number: UN1120 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2905.14 Hazard…

  • Benzyl alcohol, ACS, 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…

  • Blue Tetrazolium chloride

    Alfa Aesar

    Synonym(s): BTC, Tetrazolium Blue chloride Formula: C40H32Cl2N8O2 Formula weight: 727.66 CAS Number: 1871-22-3 Harmonized Tariff Code:  2933.99

  • Barium sulfate, 97%

    Alfa Aesar

    Formula: BaSO4 Formula weight: 233.40 Purity: 97% CAS Number: 7727-43-7 Harmonized Tariff Code:  2833.27

  • Benzo[b]thiophene-3-acetonitrile, 98+%

    Alfa Aesar

    Synonym(s): 3-Cyanomethylthianaphthene, Thianaphthene-3-acetonitrile Formula: C10H7NS Formula weight: 173.24 Purity: 98+% CAS Number: 3216-48-6 UN Number: UN3439 Hazard Class: 6.1 Packing Group: III Harmonized Tariff Code:  2934.99 Hazard Statements: H331-H302-H312 …

  • 4-Bromophenol, 99%

    Alfa Aesar

    Formula: C6H5BrO Formula weight: 173.01 Purity: 99% CAS Number: 106-41-2 UN Number: UN2811 Hazard Class: 6.1 Packing Group: III Harmonized Tariff Code:  2908.19 Hazard Statements: H301-H312-H315-H319-H335 Toxic if swallowed. Harmful in contact with skin. Causes skin…

  • 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: …

  • Benzoic acid, ACS, 99.5% min

    Alfa Aesar

    Formula: C7H6O2 Formula weight: 122.12 Purity: 99.5% min 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…

  • 1-Benzyloxy-3-iodobenzene, 99%

    Alfa Aesar

    Synonym(s): Benzyl 3-iodophenyl ether Formula: C13H11IO Formula weight: 310.14 Purity: 99% CAS Number: 107623-21-2 Harmonized Tariff Code:  2909.30

  • Buffer solution, pH 4.00 (^+0.01 @ 25^oC), Colored Red, Specpure r, NIST…

    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-P337+P313 Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse…

  • Buffer solution, pH 7.00 (^+0.01 @ 25^oC), Colored Yellow, Specpure r, NIST…

    Alfa Aesar

    Harmonized Tariff Code:  3822.00

  • 4-n-Butylphenol, 98%

    Alfa Aesar

    Formula: C10H14O Formula weight: 150.22 Purity: 98% CAS Number: 1638-22-8 UN Number: UN3145 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2907.19 Hazard Statements: H314-H318 Causes severe skin burns and eye damage. Causes serious eye damage. Precautionary…

  • 2-Bromo-4'-(1-pyrrolidinyl)acetophenone, 97%

    Alfa Aesar

    Synonym(s): 4-(1-Pyrrolidinyl)phenacyl bromide Formula: C12H14BrNO Formula weight: 268.16 Purity: 97% CAS Number: 216144-18-2 UN Number: UN3261 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2914.50 Hazard Statements: H314-H318 Causes severe skin burns and…

  • Bismuth(III) chloride, anhydrous, 99.9% (metals basis)

    Alfa Aesar

    Formula: BiCl3 Formula weight: 315.34 Purity: 99.9% (metals basis) CAS Number: 7787-60-2 UN Number: UN3260 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2827.39 Hazard Statements: H314-H318 Causes severe skin burns and eye damage. Causes serious eye damage. …

  • Bis(isopropylcyclopentadienyl)tungsten dihydride, 98+%

    Alfa Aesar

    Formula: C16H24W Formula weight: 400.22 Purity: 98+% CAS Number: 64561-25-7 UN Number: UN3398 Hazard Class: 4.3 Packing Group: III Harmonized Tariff Code:  2931.90 Hazard Statements: H226-H261-H315-H319-H335 Flammable liquid and vapour. In contact with water releases…

  • Benzaldehyde dimethyl acetal, 99%

    Alfa Aesar

    Synonym(s): alpha,alpha-Dimethoxytoluene Formula: C9H12O2 Formula weight: 152.20 Purity: 99% CAS Number: 1125-88-8 Harmonized Tariff Code:  2911.00 Hazard Statements: H302-H227 Harmful if swallowed. Combustible liquid. Precautionary Statements: P280f Wear protective…

  • 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…

  • Borate, 0.5M buffer soln., pH 8.5

    Alfa Aesar

    CAS Number: 1330-43-4 Harmonized Tariff Code:  2840.19 Hazard Statements: H360 May damage fertility or the unborn child. Precautionary Statements: P281-P201-P202-P308+P313-P405-P501a Use personal protective equipment as required. Obtain special instructions before use. Do not handle…

  • Butadiene diepoxide, 95%

    Alfa Aesar

    Synonym(s): 2,2'-Bioxirane, 1,2:3,4-Diepoxybutane Formula: C4H6O2 Formula weight: 86.09 Purity: 95% CAS Number: 1464-53-5 UN Number: UN2929 Hazard Class: 6.1 Packing Group: II Harmonized Tariff Code:  2910.90 Hazard Statements: H301-H311-H330-H340-H350-H314-H226 Toxic…

  • Bis(cyclopentadienyl)titanium dichloride, 97%

    Alfa Aesar

    Synonym(s): Dichlorobis(cyclopentadienyl)titanium, Titanocene dichloride Formula: C10H10Cl2Ti Formula weight: 249.00 Purity: 97% CAS Number: 1271-19-8 Harmonized Tariff Code:  2931.90 Hazard Statements: H301-H341-H332-H315-H319-H335 Toxic if swallowed. Suspected of causing…

  • Barium titanium oxide, 99.7% (metals basis)

    Alfa Aesar

    Synonym(s): Barium titanate Formula: BaTiO3 Formula weight: 233.19 Purity: 99.7% (metals basis) CAS Number: 12047-27-7 Harmonized Tariff Code:  2841.90 Hazard Statements: H302-H332 Harmful if swallowed. Harmful if inhaled. Precautionary Statements: …

  • Benzalkonium chloride

    Alfa Aesar

    Synonym(s): Alkylbenzyldimethylammonium chloride Formula: C6H5CH2N(CH3)2RCl CAS Number: 63449-41-2 UN Number: UN2923 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  3402.12 Hazard Statements: H314-H318-H302-H312 Causes severe skin burns and eye damage. Causes…

  • Bromopyruvic acid, 97%

    Alfa Aesar

    Synonym(s): 3-Bromo-2-oxopropionic acid Formula: C3H3BrO3 Formula weight: 166.96 Purity: 97% CAS Number: 1113-59-3 UN Number: UN3261 Hazard Class: 8 Packing Group: II Harmonized Tariff Code:  2918.30 Hazard Statements: H314-H318 Causes severe skin burns and eye damage.…

  • Benzyl mercaptan, 99%

    Alfa Aesar

    Synonym(s): Thiobenzyl alcohol, alpha-Toluenethiol Formula: C7H8S Formula weight: 124.21 Purity: 99% CAS Number: 100-53-8 UN Number: UN2810 Hazard Class: 6.1 Packing Group: II Harmonized Tariff Code:  2930.90 Hazard Statements: H330-H227-H302 Fatal if inhaled.…

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