GADOLINIUM(III) FLUORIDE
gadolinium(iii) fluoride
CAS: 13765-26-9
Molecular Formula: F3Gd
GADOLINIUM(III) FLUORIDE - Names and Identifiers
| Name | gadolinium(iii) fluoride |
| Synonyms | Gadolinium(III) GADOLINIUM FLUORIDE Gadolinium fluoride gadolinium trifluoride GADOLINIUM TRIFLUORIDE gadolinium(iii) fluoride GADOLINIUM(III) FLUORIDE Gadolinium (III) fluoride gadolinium(+3) cation fluoride GadoliniumfluorideanhydrousREOwhitepowder Gadolinium fluoride, Anhydrous, Low oxygen |
| CAS | 13765-26-9 |
| EINECS | 237-369-4 |
| InChI | InChI=1/FH.Gd/h1H;/q;+3/p-1 |
| InChIKey | TYIZUJNEZNBXRS-UHFFFAOYSA-K |
GADOLINIUM(III) FLUORIDE - Physico-chemical Properties
| Molecular Formula | F3Gd |
| Molar Mass | 214.25 |
| Density | 7.1 |
| Melting Point | 1231°C |
| Boling Point | 19.5℃ at 760 mmHg |
| Water Solubility | Insoluble in water. |
| Appearance | White powder |
| Color | White |
| Exposure Limit | ACGIH: TWA 2.5 mg/m3NIOSH: IDLH 250 mg/m3 |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
| Sensitive | Hygroscopic |
| MDL | MFCD00016113 |
| Use | Used for the preparation of metal gadolinium |
GADOLINIUM(III) FLUORIDE - 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 | UN 3288 6.1/PG 3 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 10 |
| TSCA | Yes |
| HS Code | 28469000 |
| Hazard Note | Irritant |
| Hazard Class | 6.1 |
| Packing Group | III |
GADOLINIUM(III) FLUORIDE - Introduction
Crystal
Last Update：2022-10-16 17:13:42
GADOLINIUM(III) FLUORIDE - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Use | Used to prepare metal gadolinium, etc. Used to synthesize non-oxide glass. |
| production method | hydrofluoric acid precipitation vacuum dehydration method. First add hydrofluoric acid to gadolinium sulfate solution to precipitate hydrated gadolinium fluoride, and then heat in a vacuum to remove crystal water. The concentration of hydrofluoric acid is generally 40% ~ 48%, and its consumption is 110% ~ 120% of the theoretical amount. The fluoride precipitated from the aqueous solution has a large volume and adsorbs a lot of sulfate ions. It must be fully washed with water, and the water washing adopts the pouring method. The filtered sediment is dried at 100~150 ℃ to remove adsorbed water. Fluoride containing only crystal water is obtained. In order to avoid high temperature hydrolysis during dehydration and generate oxyfluoride GdOF, the dehydration process needs to be heated in vacuum. The vacuum degree should be higher than 0 133Pa, and the dehydration temperature should not be lower than 300 ℃. Another dehydration method is to dehydrate gadolinium fluoride in a dry hydrogen fluoride stream, and the final dehydration temperature is 600~650 ℃. This dehydration method under the protection of hydrogen fluoride atmosphere can further fluorinate the hydrated gadolinium fluoride during the dehydration process, which can ensure the quality of the product. Since hydrofluoric acid precipitation is carried out in aqueous solution, plastic containers are generally used, and the materials of dehydration equipment must be resistant to high temperature corrosion. Nickel-based alloys or pure nickel are generally used as lining materials. |
Last Update：2024-04-09 20:49:11
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View History
GADOLINIUM(III) FLUORIDE
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6-马来酰亚胺基己酸N-琥珀酰亚胺酯[交联剂]
3-硝基-吡啶甲醛盐酸盐
塑料荧光增白剂PEB
对-甲基苯基异氰酸酯
N-(2-CHLOROETHYL)ETHANAMINE HYDRO CHLORIDE
6-羟基-7-甲氧基-3H-喹唑啉-4-酮
EUROPIUM D-3-TRIFLUOROACETYLCAMPHORATE
脱氧岩藻糖野尻霉素(盐酸盐)
4-巯基苯基乙酸
6-马来酰亚胺基己酸N-琥珀酰亚胺酯[交联剂]
3-硝基-吡啶甲醛盐酸盐