YTTRIUM BARIUM COPPER OXIDE Property

form 

powder

Safety

Hazard Codes 

Xi,Xn

Risk Statements 

36/37/38-20/21/22

Safety Statements 

26-36-37/39

RIDADR 

UN1564

WGK Germany 

1

HazardClass 

6.1

PackingGroup 

III

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

YTTRIUM BARIUM COPPER OXIDE Chemical Properties,Usage,Production

Description

Yttrium barium copper oxide (YBCO) is a crystalline compound with important property of high temperature superconductor above the boiling point (77 K) of liquid nitrogen. YBCO is sensitive to air and moisture. Exposures to YBCO have been reported to cause skin irritation, serious eye irritation, and respiratory irritation. Symptoms of systemic copper poisoning may include capillary damage, headache, cold sweat, weak pulse, kidney and liver damage, central nervous system excitation followed by depression, jaundice, convulsions, paralysis, and coma. Death may occur from shock or renal failure. Chronic copper poisoning is typified by hepatic cirrhosis, brain damage and demyelination, kidney defects, and copper deposition in the cornea as exemplified by humans with Wilson s disease. It has also been reported that copper poisoning has led to haemolytic anaemia and accelerates arteriosclerosis.

Chemical Properties

orthorhombic; superconductor; 0.2μm powder(s); wet processed from 99.999% nitrates; a hard grayish black sintered material prepared by reacting carbonate and hydroxide free Y2O3 with stoichoimetric amounts of BaCO3 and CuO in air at 950°C for 12h; sensitive to atmospheric CO2 and H2O; a=0.3835nm, b=0.3884nm, c=1.1681nm; transition temp, Tc, is 92K; for YBa2Cu3.5O7.5, Tc is 94 Κ[STR93] [CON87] [CEN92] [ASM93] [ALF93]