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Lanthanum sulfate

chemical substances

Lanthanum sulfate, chemical formula La two (SO four ) three 。 The molecular weight is 566.00. White powder. The most common form is its octahydrate, and the colorless salt is hexagonal crystal. It can be used to determine the atomic weight of elements, spectral analysis, and as antiseptic and reagent.

Chinese name: Lanthanum sulfate
Foreign name: Lanthanum sulfate
Lanthanum(III) sulfate^[3]
Alias: Anhydrous lanthanum sulfate (III)

chemical formula: La two (SO four ) three
molecular weight: five hundred and sixty-six
CAS login number: 10099-60-2
Appearance: White powder

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essential information

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^[1]

Chinese Name: Lanthanum Sulfate

English alias: Lanthanum (III) sulfonate octahydrate (99.9% La) (REO); lanthanum sulfate (2:3); lanthanum(+3) cation sulfate

EINECS：233-239-6

Molecular formula: La two (SO four ) three

Molecular weight: 566

Appearance: white powder

Relative density: 3.60

Solubility: easy to be deliquescent, temperature rises in water, solubility decreases, insoluble in acetone.

Physical and chemical properties

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The most common is its octahydrate. The colorless salt is hexagonal crystal, which is dehydrated at 500 ℃, and forms basic salt at 700 ℃. It can form various double sulfate salts with alkali metal sulfate. Formation of La (HSO) in sulfuric acid four ) 3， stay hydrogen sulfide Generated when heating under airflow sulfide 。^[2]

Nine hydrate La two (SO four ) three ·9H two O=728.14 colorless hexagonal crystal. The relative density is 2.82. When heated to 400 ℃, one molecule of crystal water is lost, and it turns into anhydrous salt at 500 ℃.

Preparation method

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take Lanthanum hydroxide or Lanthanum oxide Dissolve in sulfuric acid to obtain hydrate 。 Then slowly heat the hydrate to get anhydrous.

application area

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It is used as antiseptic, for determining atomic weight and spectral analysis of elements, as antiseptic and reagent.^[2]

Calculate chemical data

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data^[3] ：

1. Reference value for drainage parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond receptors: 12

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecular polar surface area 266

7. Number of heavy atoms: 17

8. Surface charge: 0

9. Complexity: 62.2

10. Number of isotope atoms: 0

11. Determine the number of atomic structure centers: 0

12. Number of uncertain atomic structure centers: 0

13. Determine the number of chemical bond structural centers: 0

14. Number of indeterminate chemical bond structure centers: 0

15. Number of covalent bond units: 5

Molecular structure data

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data^[3] ：

1. Molar refractive index: None available

2. Molar volume (cm three /Mol): None available

3. Isotonic specific volume (90.2K): none available

4. Surface tension (dyne/cm): none available

5. Dielectric constant: None available

6. Polarization (10 -24 cm three ）: No available

7. Single isotope mass: 565.667883 Da

8. Nominal mass: 566 Da

9. Average mass: 565.9987 Da

security information

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information^[4] ：

Personal protective equipment	Eyeshields;Gloves;type N95 (US); type P1 (EN143) respirator filter
Risk Statement (Europe)	R36/37/38
Security Statement (Europe)	S26-S36/37/39
Dangerous goods transportation code	NONH for all modes of transport
WGK Germany	two
RTECS No	OE5400000

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