strontium difluoride
Strontium fluoride
CAS: 7783-48-4
Molecular Formula: F2Sr
strontium difluoride - Names and Identifiers
strontium difluoride - Physico-chemical Properties
| Molecular Formula | F2Sr |
| Molar Mass | 125.62 |
| Density | 4.24 g/mL at 25 °C (lit.) |
| Melting Point | >1400 °C (lit.) |
| Boling Point | 2489 °C (lit.) |
| Water Solubility | 11.7 mg/100 mL (18 ºC) |
| Vapor Presure | 922mmHg at 25°C |
| Appearance | Powder |
| Specific Gravity | 4.24 |
| Color | White |
| Exposure Limit | ACGIH: TWA 2.5 mg/m3NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
| Solubility Product Constant(Ksp) | pKsp: 8.36 |
| Merck | 14,8842 |
| Storage Condition | Room Temprature |
| Stability | hygroscopic |
| Refractive Index | 1.442 |
| MDL | MFCD00011251 |
| Physical and Chemical Properties | |
| Use | Manufacturing of optical glass and single crystal for laser, raw materials for pharmaceutical industry and daily chemical industry |
strontium difluoride - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN3288 |
| WGK Germany | 2 |
| RTECS | WK8925000 |
| TSCA | Yes |
| Hazard Note | Irritant |
| Hazard Class | 6.1 |
| Packing Group | III |
strontium difluoride - Upstream Downstream Industry
| Raw Materials | Hydrofluoric Acid Strontium carbonate,nanometre |
strontium difluoride - Nature
Open Data Verified Data
white powder, slightly soluble in water, soluble in hydrochloric acid, insoluble in hydrofluoric acid, ethanol and acetone. Belong to cubic crystal system, stable in air, can be decomposed by strong acid. Density 4. 24, melting point 1473 ℃, boiling point 2489 ℃. Conversion to strontium oxide at> 1000 °c in air.
Last Update：2024-01-02 23:10:35
strontium difluoride - Preparation Method
Open Data Verified Data
strontium carbonate was slurried with water and reacted by gradually adding 40% hydrofluoric acid to control the mid-point pH and kept constant. The product is filtered, dried, and pulverized, and is the final strontium fluoride product.
Last Update：2022-01-01 11:01:34
strontium difluoride - Introduction
Soluble in hydrochloric acid, insoluble in hydrofluoric acid, ethanol and acetone. The product belongs to the cubic crystal system, which is stable in the air and can be decomposed by strong acids.
Last Update：2022-10-16 17:28:45
strontium difluoride - Use
Open Data Verified Data
It can be used for manufacturing optical glass and single crystal for laser. It can also be used in the pharmaceutical industry and daily chemical industry, such as anti-caries additives for toothpaste, flux, etc.
Last Update：2022-01-01 11:01:34
strontium difluoride - Safety
Open Data Verified Data
plastic woven bags are lined with plastic bags, each with a net weight of 25kg, or with a net weight of 1000kg per container. It should be stored in a ventilated and dry warehouse, and should not be mixed with acids. Handling should be light and light, to prevent packaging damage. It is an inorganic toxic substance with risk code number GB 6.1 class 61513. Wash with water when touching the skin. Flush with warm water when invading into the eye. Ingestion poisoning with 2% calcium chloride gastric lavage, intravenous injection of calcium gluconate. During operation, wear work clothes, protective masks and latex gloves to prevent inhalation of aluminum fluoride dust. Production equipment should be closed and the workshop should be well ventilated. The protection of hydrofluoric acid in the process of making acid is shown in hydrofluoric acid; The protection of strontium fluoride can also be referred to barium fluoride.
Last Update：2022-01-01 11:01:35
strontium difluoride - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Applications | mainly used in the manufacture of optical glass, advanced electronic components, also used for pharmaceutical and other fluoride substitutes manufacturing optical glass and laser single crystal, raw materials for pharmaceutical industry and daily Chemical Industry |
Last Update：2024-04-10 22:29:15
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Raw Materials for strontium difluoride