Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
660167
Sodium silica gel Stage I
extent of labeling: ~35 wt. % Na-K loading
Synonym(s):
Na-SG-I
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5 G
MXP 867.00
25 G
MXP 3,464.00
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5 G
MXP 867.00
25 G
MXP 3,464.00
About This Item
Recommended Products
form
solid
autoignition temp.
248-257 °F
reaction suitability
reagent type: reductant
extent of labeling
~35 wt. % Na-K loading
Application
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Dam. 1 - Skin Corr. 1B - Water-react 2
Supplementary Hazards
Storage Class Code
4.3 - Hazardous materials which set free flammable gases upon contact with water
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Dye, J. L. et al
Journal of the American Chemical Society, 127, 9339-9339 (2005)
P. F. Vogt and B. Bodnar,
Spec. Chem., 29, 22-24 (2009)
P. Nandi, et al.,
Tetrahedron Letters, 50, 3864-3866 (2009)
Articles
SiGNa Chemistry has recently developed a technology for encapsulating alkali metals into nano-structured porous oxides to create stable, free flowing powders with varying reactivities (based on the intended application).
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What is the difference between the NaK Silica gels (Na2K) , for example Stage I or Stage II?
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These alkali silica gels, which are offered by Sigma-Aldrich for SiGNa Chemistry, can reduce some of the handling precautions traditionally associated with alkali metals, while still retaining the reducing power of the parent alkali.They are classified into three categories. Stage 0 powders, like 660140 or 660159, are air-sensitive, but can easily be used in continuous-flow applications. Stage I powders, like 660167, are non-pyrophoric and dry air-stable; they can be stored for months without any change in reducing capacity. Stage II powders are easily handled in an open ambient environment, but readily react with water to produce stoichiometric yields of pure hydrogen gas. Stage II powders function well as a hydrogen source or drying agent.
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