Usage Method and Cautions
Preparations before the Use in Experiment
SD contains metallic sodium with a density of 25wt%. Therefore, users are advised to remove water and combustible substances that have liquid absorbing properties (e.g., dry paper and cloth) from the experiment site. Experiments could become particularly dangerous should dry paper or cloth come into contact with SD and absorb the oil that insulates the metallic sodium, a circumstance that would expose fine particles of metallic sodium to atmosphere.
To ensure preparedness in the event of an accidental SD spill, please keep oil-soaked paper towels (e.g., Kimtowel; use a mineral oil, such as liquid paraffin, insulation oil, etc.) to hand.
SD may initiate spontaneous combustion if exposed to a small amount of water while exposed to atmosphere. Once combustion is initiated, it is difficult to extinguish as water cannot be used. Accordingly, please procure a combustible metal fire extinguisher in advance.
Storage
Since a low-temperature environment increases the viscosity and specific gravity of oil used in SD, the dispersion of metallic sodium fine particles will remain good for an extended period of time as long as the material is stored at consistently low temperatures. Users are therefore advised to store SD in a freezer (set at below -20°C).
We have confirmed that SD has a shelf life of one year when it is stored unopened at a temperature of below -20°C.
When SD is stored at a temperature of 0°C or higher for a period of six months, a sediment of fine particles of sodium will begin to agglomerate. Please note, SD that has entered this state is more dangerous, with a higher risk of spontaneous combustion as well as increased reactivity to water.
Safety Data Sheet (SDS)
Please read and confirm your full understanding of the content of the SDS before using this product and comply with laws and regulations as well as individual company or research laboratory rules when engaging in experimentation using SD.
How to Purchase SD samples
Please click on the following link to order samples.
Our SD is also marketed by Tokyo Chemical Industry Co., Ltd. and FUJIFILM Wako Pure Chemical Corporation under the product name “SD Super Fine”.
For inquiries about metallic SD
To order SD samples, please fill out and send the following form.
Our staff in charge of ordering will contact you.