Molecular Formula | FNa |
Molar Mass | 41.99 |
Density | 1.02g/mLat 20°C |
Melting Point | 993 °C (lit.) |
Boling Point | 1700 °C |
Flash Point | 1704°C |
Water Solubility | 4 g/100 mL (25 ºC) |
Solubility | H2O: 0.5M at20°C, clear, colorless |
Vapor Presure | 1.4 mm Hg ( 0 °C) |
Appearance | powder |
Specific Gravity | 2.558 |
Color | White to off-white |
Odor | Odorless |
Exposure Limit | ACGIH: TWA 2.5 mg/m3NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
Merck | 14,8618 |
PH | 7.0-10.0 (25℃, 0.5M in H2O) |
Storage Condition | 2-8°C |
Stability | Stable. Hydrolyzed by water. Reacts with mineral acids to generate highly toxic hydrogen fluoride. Incompatible with glass. |
Sensitive | Hygroscopic |
Refractive Index | 1.336 |
Physical and Chemical Properties | Characteristics of colorless bright crystals or white powder, belonging to tetragonal crystal system, there are six or octahedral crystal. melting point 993 ℃ boiling point 1695 ℃ relative density 2.558 solubility slightly soluble in alcohol; Soluble in water, acidic aqueous solution, soluble in hydrofluoric acid to form sodium fluoride. |
Use | Used as disinfectants, antiseptics, pesticides, also used in enamel, wood anti-corrosion, medicine, metallurgy and fluoride, etc |
Risk Codes | R25 - Toxic if swallowed R32 - Contact with acids liberates very toxic gas R36/38 - Irritating to eyes and skin. R22 - Harmful if swallowed |
Safety Description | S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36 - Wear suitable protective clothing. S22 - Do not breathe dust. |
UN IDs | UN 1690 6.1/PG 3 |
WGK Germany | 1 |
RTECS | WB0350000 |
FLUKA BRAND F CODES | 10 |
TSCA | Yes |
HS Code | 2826 19 10 |
Hazard Note | Toxic/Hygroscopic |
Hazard Class | 6.1 |
Packing Group | III |
Toxicity | LD50 orally in rats: 0.18 g/kg (Smyth) |
colorless, White cubic or square crystal or powder. Melting point 993 deg C; Boiling point 1 740 deg C; d2. 78. Soluble in water, the solubility in water (g/lOOmL): 4.O(15 °c), 4.3(25 °c), 5.O (100 °c). The aqueous solution is alkaline and corrosive to glass. Insoluble in ethanol. There are no specific combustion and explosion characteristics. Contact with acid or acid gas can produce toxic gases.
sodium fluoride precipitates are generated by adding sodium hydroxide or carbonic acid solution to hydrofluoric acid. The precipitate was suction-filtered and dried to obtain pure sodium fluoride.
determination of scandium by microanalysis and determination of phosphorus by photoelectric colorimetry. Also used in blood tests and as masking agents, preservatives.
rat light-oral LDso:0.18g/kg. Sodium fluoride dust and vapors are irritating to the skin and eyes. Staff should be protected. If the skin and eyes are touched, they should be immediately rinsed with plenty of water. Store in a cool, ventilated warehouse. Keep the container sealed. It shall be stored separately from oxidant, acid and edible chemical raw materials, and shall not be mixed for storage and transportation.