Molecular Formula | Sr |
Molar Mass | 87.62 |
Density | 2.6 g/mL at 25 °C (lit.) |
Melting Point | 757 °C (lit.) |
Boling Point | 1384 °C (lit.) |
Water Solubility | reacts quickly with H2O; soluble alcohol [HAW93] |
Solubility | H2O: soluble |
Appearance | random pieces |
Specific Gravity | 2.54 |
Color | White to pale yellow |
Exposure Limit | ACGIH: TWA 2 ppm; STEL 4 ppmOSHA: TWA 2 ppm(5 mg/m3)NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3) |
Merck | 13,8915 |
Storage Condition | 2-8°C |
Sensitive | Air & Moisture Sensitive |
Physical and Chemical Properties | Silvery white soft metal. The relative density was 2.63. Melting point 769 °c. Boiling point 1384 °c. Face-centered cube. Chemical properties between calcium and barium, active strong, rapid oxidation in the air, the surface of the formation of a yellow oxide film. Spontaneous combustion can occur when it is pulverized in air. Heating can combine with hydrogen to form strontium hydride. It is also easy to react with halogen elements and phosphorus. Resistivity (20 ℃)23 μ Ω? cm, heat of fusion 7.43kJ/mol; Heat of vaporization 136.9 kJ/tool. Electronegativity 1.10. When water is decomposed to release hydrogen and a lot of heat, so that the hydrogen causes combustion, a deep red flame. Soluble in acids and produce hydrogen to cause combustion, soluble in alcohol. |
Risk Codes | R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes R38 - Irritating to the skin R14 - Reacts violently with water R11 - Highly Flammable R36/38 - Irritating to eyes and skin. R34 - Causes burns R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R36 - Irritating to the eyes R14/15 - |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S27 - Take off immediately all contaminated clothing. S23 - Do not breathe vapour. |
UN IDs | UN 3264 8/PG 3 |
WGK Germany | 3 |
RTECS | WK8400000 |
TSCA | Yes |
Hazard Class | 4.3 |
Packing Group | II |