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Boric Acid Gel for Column Chromatography (.pdf)
(Test and Measurement)
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From this Article:
Boric Acid Gel is a cross-linked polymer insoluble in water and all organic solvents. It is prepared by the cross-linking copolymerization of dihydroxyborylanilino-substituted methacrylic acid with 1,4-butanediol dimethacrylate. The gel is swollen in...
( View Full Article)
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Dihydropyran Technical Information Bulletin (.pdf)
(Chemicals and Raw Materials)
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From this Article:
Dihydropyran, a versatile vinyl ether, reacts with alcohols under mild acid catalysis1 (p-toluenesulfonic acid or, more effectively, boron trifluoride etherate2) to form tetrahydropyranyl ethers which are extremely useful protecting groups for...
( View Full Article)
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Gas Regulators: Selection, Installation and Operation (.pdf)
(Gas Sensing)
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From this Article:
Aldrich lecture bottle and specialty gas regulators are designed for use with dry (anhydrous) gases at a normal operating temperature of 70°F (21°C) and maximum inlet pressure of 3000psig. Certain gases will hydrolyze in the presence of moisture to...
( View Full Article)
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Handling and Storage of Air-Sensitive Reagents (.pdf)
(Material Handling and Packaging)
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From this Article:
A variety of air-sensitive reagents are available from Sigma-Aldrich. Since these reagents react with water, oxygen, or both, they must never be exposed to the atmosphere. The remarkable chemistry of these reagents can be handled easily on a...
( View Full Article)
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Instructions for Handling Glass Bottles of Sulfur Trioxide, Stabilized (.pdf)
(Chemicals and Raw Materials)
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From this Article:
Sulfur trioxide, stabilized (Sulfan®, sulfuric anhydride) is a
powerful sulfurating agent, very strong oxidizer, and strongly
acidic.
( View Full Article)
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Microparticle Size Standards Technical Information (.pdf)
(Test and Measurement)
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From this Article:
Aldrich is proud to offer a complete line of polymer products. This includes
fine microparticle products and in-depth technical assistance in selecting,
processing, and using these products. Our microparticle size standards are part of
this line.
( View Full Article)
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Pressure Conversion Chart (.pdf)
(Pressure Sensing)
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