Reagents, S

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  • Silicone oil, for oil baths, usable range from -40 to +200°C

    Alfa Aesar

    Synonym(s): Dimethyl polysiloxane CAS Number: 63148-62-9 Harmonized Tariff Code:  3910.00

  • Silver chloride, 99.9% (metals basis)

    Alfa Aesar

    Formula: AgCl Formula weight: 143.32 Purity: 99.9% (metals basis) CAS Number: 7783-90-6 UN Number: UN3077 Hazard Class: 9 Packing Group: III Harmonized Tariff Code:  2843.29 Hazard Statements: H290 May be corrosive to metals. Precautionary Statements: P234-P390-P406 …

  • Sodium hydroxide, flake, 98%

    Alfa Aesar

    Formula: NaOH Formula weight: 40.00 Purity: 98% CAS Number: 1310-73-2 UN Number: UN1823 Hazard Class: 8 Packing Group: II Harmonized Tariff Code:  2815.11 Risk Phrases: 35 Causes severe burns. Safety Phrases: 26-37/39-45 In case of contact with eyes, rinse immediately…

  • Sodium sulfide nonahydrate, ACS, 98.0% min

    Alfa Aesar

    CAS No. : 1313-84-4 MDL: MFCD00149184 EINECS: 215-211-5 Formula: Na2S•9H2O Formula Weight: 240.18 (78.04anhy) Form: Crystalline Melting Point: ca 50° dec. Density: 1.427 Sensitivity: Light Sensitive &…

  • Sulfuric acid, 0.02N Standardized Solution

    Alfa Aesar

    Formula: H2SO4 Formula weight: 98.08 Harmonized Tariff Code:  2807.00

  • Starch, soluble

    Alfa Aesar

    CAS Number: 9005-84-9 Harmonized Tariff Code:  3505.10

  • Sodium borate, 0.5M buffer soln., pH 9.0

    Alfa Aesar

    CAS Number: 1330-43-4 Harmonized Tariff Code:  2810.00 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…

  • Sodium metaperiodate, 98%

    Alfa Aesar

    Synonym(s): Sodium periodate Formula: INaO4 Formula weight: 213.89 Purity: 98% CAS Number: 7790-28-5 UN Number: UN1479 Hazard Class: 5.1 Packing Group: II Harmonized Tariff Code:  2829.90 Hazard Statements: H272-H315-H319-H335 May intensify fire; oxidizer. Causes skin…

  • Sodium 3-hydroxybutyrate, 98%

    Alfa Aesar

    Synonym(s): DL-3-Hydroxybutyric acid sodium salt Formula: C4H7NaO3 Formula weight: 126.09 Purity: 98% CAS Number: 150-83-4 Harmonized Tariff Code:  2918.19

  • Sodium citrate, 0.5M buffer soln., pH 5.0

    Alfa Aesar

    Harmonized Tariff Code:  2918.15 Hazard Statements: H318 Causes serious eye damage. Precautionary Statements: P280-P305+P351+P338-P310 Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact…

  • Sulfanilamide, 98%

    Alfa Aesar

    Synonym(s): 4-Aminobenzenesulfonamide Formula: C6H8N2O2S Formula weight: 172.21 Purity: 98% CAS Number: 63-74-1 Harmonized Tariff Code:  2935.00 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. …

  • Sodium phosphate, tribasic, anhydrous, tech.

    Alfa Aesar

    Synonym(s): Trisodium phosphate Formula: Na3O4P Formula weight: 163.94 CAS Number: 7601-54-9 UN Number: UN3262 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2835.29 Hazard Statements: H314-H318 Causes severe skin burns and eye damage. Causes serious eye…

  • Sodium carbonate, 0.05N Standardized Solution

    Alfa Aesar

    Formula: Na2CO3 Formula weight: 105.99 CAS Number: 497-19-8 Harmonized Tariff Code:  3822.00

  • Silicon(IV) bromide

    Alfa Aesar

    Synonym(s): Silicon tetrabromide Formula: SiBr4 Formula weight: 347.72 CAS Number: 7789-66-4 UN Number: UN3264 Hazard Class: 8 Packing Group: II Harmonized Tariff Code:  2812.90 Hazard Statements: H314-H335-H319 Causes severe skin burns and eye damage. May cause…

  • Sodium borate, 0.5M buffer soln., pH 8.5

    Alfa Aesar

    CAS Number: 1330-43-4 Harmonized Tariff Code:  2810.00 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…

  • Sodium metatungstate monohydrate

    Alfa Aesar

    Synonym(s): Sodium tungstate (meta), Sodium polytungstate Formula: Na6O39W12 H2O Formula weight: 2986.13 (2968.12anhy) CAS Number: 12141-67-2 Harmonized Tariff Code:  2841.80 Hazard Statements: H318-H302 Causes serious eye damage. Harmful if swallowed. Precautionary Statements: …

  • Silver Nitrate, ACS, 99.9+% (metals basis)

    Alfa Aesar

    CAS Number: 7761-88-8 MDL: MFCD00003414 EINECS: 231-853-9 Formula: AgNO3 Formula Weight: 169.87 Form: Crystalline Melting Point: 212° Flash Point: None Density: 4.352 Sensitivity: Light Sensitive Solubility: …

  • Sodium 3-chloro-2-hydroxypropanesulfonate hemihydrate, 98%

    Alfa Aesar

    Synonym(s): 3-Chloro-2-hydroxypropanesulfonic acid sodium salt hemihydrate Formula: C3H6ClNaO4S 0.5H2O Formula weight: 205.60 (196.59anhy) Purity: 98% CAS Number: 143218-48-8 Harmonized Tariff Code:  2905.59 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes…

  • Sodium cyanide, ACS, 95% min

    Alfa Aesar

    Formula: NaCN Formula weight: 49.01 Purity: 95% min CAS Number: 143-33-9 UN Number: UN1689 Hazard Class: 6.1 Packing Group: I Harmonized Tariff Code:  2837.11 Hazard Statements: H300-H310-H330 Fatal if swallowed. Fatal in contact with skin. Fatal if inhaled. …

  • Streptozotocin, 97+%

    Alfa Aesar

    Synonym(s): NSC-85998, U-9889 Formula: C8H15N3O7 Formula weight: 265.22 Purity: 97+% CAS Number: 18883-66-4 Harmonized Tariff Code:  2941.90 Hazard Statements: H351 Suspected of causing cancer. Precautionary Statements: P281-P201-P202-P308+P313-P405-P501a Use personal…

  • Sodium tripolyphosphate

    Alfa Aesar

    Synonym(s): Sodium phosphate, Sodium triphosphate Formula: Na5P3O10 Formula weight: 367.91 CAS Number: 7758-29-4 Harmonized Tariff Code:  2835.31 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. …

  • Sodium cyanide, granules, 98%

    Alfa Aesar

    Formula: CNNa Formula weight: 49.01 Purity: 98% CAS Number: 143-33-9 UN Number: UN1689 Hazard Class: 6.1 Packing Group: I Harmonized Tariff Code:  2837.11 Hazard Statements: H300-H310-H330 Fatal if swallowed. Fatal in contact with skin. Fatal if inhaled. Precautionary…

  • Sodium thiosulfate pentahydrate, ACS, 99.5-101.0%

    Alfa Aesar

    Formula: Na2O3S2 5H2O Formula weight: 248.17 (158.10anhy) Purity: 99.5-101.0% CAS Number: 10102-17-7 Harmonized Tariff Code:  2832.30

  • Sodium perchlorate monohydrate, ACS, 85.0-90.0%

    Alfa Aesar

    Formula: NaClO4 H2O Formula weight: 140.48 (122.46anhy) Purity: 85.0-90.0% CAS Number: 7791-07-3 UN Number: UN1502 Hazard Class: 5.1 Packing Group: II Harmonized Tariff Code:  2829.90 Hazard Statements: H271-H301 May cause fire or explosion; strong oxidizer. Toxic if…

  • Sulfuric acid, Acculute Standard Volumetric Solution, Final Concentration 2.0N

    Alfa Aesar

    Formula: H2SO4 Formula weight: 98.08 CAS Number: 7664-93-9 UN Number: UN2796 Hazard Class: 8 Packing Group: II Harmonized Tariff Code:  2807.00 Hazard Statements: H314 Causes severe skin burns and eye damage. Precautionary Statements: …

  • Sodium hypochlorite, 14.5% available chlorine

    Alfa Aesar

    Formula: ClNaO Formula weight: 74.44 CAS Number: 7681-52-9 UN Number: UN1791 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2828.90 Hazard Statements: H314 Causes severe skin burns and eye damage. Precautionary Statements: …

  • Stearic acid, 98%

    Alfa Aesar

    Synonym(s): Octadecanoic acid Formula: CH3(CH2)16CO2H Formula weight: 284.48 Purity: 98% CAS Number: 57-11-4 Harmonized Tariff Code:  2915.70 Risk Phrases: 36/37/38 Irritating to eyes, respiratory system and skin. Safety Phrases: 26-37 In case of contact with eyes, rinse…

  • Sodium ^b-glycerophosphate pentahydrate

    Alfa Aesar

    Synonym(s): beta-Glycerol phosphate disodium salt pentahydrate Formula: (HOCH2)2CHOPO(ONa)2 5H2O Formula weight: 306.12 (216.04anhy) CAS Number: 13408-09-8 Harmonized Tariff Code:  2919.90

  • Sodium carbonate, anhydrous, Puratronic r, 99.997% (metals basis)

    Alfa Aesar

    Formula: Na2CO3 Formula weight: 105.99 Purity: 99.997% (metals basis) CAS Number: 497-19-8 Harmonized Tariff Code:  2836.20 Hazard Statements: H319 Causes serious eye irritation. Precautionary Statements: P280-P264-P305+P351+P338-P337+P313 Wear protective gloves/protective…

  • Sucrose, ACS

    Alfa Aesar

    Synonym(s): D-(+)-Saccharose Formula: C12H22O11 Formula weight: 342.30 CAS Number: 57-50-1 Harmonized Tariff Code:  1701.99

  • Sodium perchlorate monohydrate, 97+%

    Alfa Aesar

    Formula: NaClO4 H2O Formula weight: 140.48 (122.46anhy) Purity: 97+% CAS Number: 7791-07-3 UN Number: UN1502 Hazard Class: 5.1 Packing Group: II Harmonized Tariff Code:  2829.90 Hazard Statements: H271-H301 May cause fire or explosion; strong oxidizer. Toxic if swallowed. …

  • Sodium chromate tetrahydrate, 99+%

    Alfa Aesar

    Formula: Na2CrO4 4H2O Formula weight: 234.04 (161.97anhy) Purity: 99+% CAS Number: 10034-82-9 UN Number: UN3288 Hazard Class: 6.1 Packing Group: II Harmonized Tariff Code:  2841.50 Hazard Statements: H300-H311-H330-H334-H340-H350-H360-H372-H314-H318-H317 Fatal if…

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