7440-52-0

Name	Erbium atomic absorption standard solution
Synonyms	Erbium ERBIUM METAL ErbiumingotNREO ERBIUM STANDARD ErbiumchipsNREO ErbiumpowderNREOmesh Erbium Rod 6.25 mm diameter ErbiumfoilNREOmmthickcagxmm Erbium Foil 0.5 x 25 x 50 mm Erbium Foil 0.25 x 25 x 50 mm ERBIUM SINGLE ELEMENT STANDARD Erbium atomic absorption standard solution ERBIUM PLASMA EMISSION SPECTROSCOPY STANDARD
CAS	7440-52-0
EINECS	231-160-1
InChI	InChI=1/Er

Molecular Formula	Er
Molar Mass	167.26
Density	9.062 g/mL at 25 °C (lit.)
Melting Point	1529 °C (lit.)
Boling Point	2868 °C (lit.)
Water Solubility	Soluble in acids. Insoluble in water.
Appearance	powder
Specific Gravity	9.006
Color	Silver-gray
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	13,3675
Storage Condition	Sealed storage
Sensitive	Moisture Sensitive
Refractive Index	1.47 (1300 nm)
MDL	MFCD00010987
Use	Mainly used as an additive for special metallurgy, and also used in scientific research and testing.

Hazard Symbols	F - Flammable
Risk Codes	11 - Highly Flammable
Safety Description	S43 - In case of fire use ... (there follows the type of fire-fighting equipment to be used.) SNeverusewater. -
UN IDs	UN 3089 4.1/PG 2
WGK Germany	3
FLUKA BRAND F CODES	1-10
TSCA	Yes
Hazard Class	8
Packing Group	III

Silvery white. It is shiny and soft, and can decompose water.

Last Update：2022-10-16 17:28:21

resistivity	86 ++-cm, 20°C
EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
Introduction	erbium is a chemical element, its chemical symbol is Er, its atomic number is 68, belonging to the lanthanide, is one of the rare earth elements. Erbium is silver gray metal, soft, insoluble in water and alkali, soluble in acid. The salts and oxides were pink to red. Its first ionization energy is 6.10 electron volts. The chemical and physical properties of dysprosium and dysprosium are almost identical. The isotopes of erbium are: 162Er, 164Er, 166Er, 167Er, 168Er, 170Er.
History of discovery	1843, discovered by C.G.Mosander. He originally named the oxide of erbium terbium oxide, therefore, in the early German literature, terbium oxide and erbium oxide are confused. It was not until 1860 that this was corrected.
preparation	erbium is present in igneous rocks and can be prepared by electrolytically melting erbium chloride ercl3.
Application	erbium has the following applications: 1. Photographic filters. Nuclear reaction control rod. 3. The oxide Er2O3 is a rose red color, which is used to make the glaze color of pottery.
safety information	erbium oxide [Er(NO3)] 3] In the case of "electric shock" or high temperature may be an explosion. As with other rare earths, care should be taken with respect to their compounds, as they may be toxic.

Last Update：2024-04-09 21:54:55

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CAS: 7440-52-0
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