USP-1 and USP-1-amber glass is a neutral borosilicate glass with high boron content. The glass is intended for the manufacture of glass tubes and must meet the requirements of TU U 00480945-002-96 "Medical glass of the USP-1 brand".
The hydrolytic resistance of USP-1 and USP-1-amber glass corresponds to the HGA 1 ISO 720 /HGB 1 ISO 719 class, which allows the use of USP-1 and USP-1-amber glass for the manufacture of medical containers that ensure long-term and reliable storage of medicinal products.
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Chemical Composition of USP-1 and USP-1-amber medical glass
| Glass brand | Composition in mass fractions, % | |||||||
|
SiO2 ±0,50 |
Al2O3 ±0,20
|
B2O3 ±0,25
|
Ñóìà CaO, MgO ±0,30
|
Ê2Î ±0,20
|
Na2O ±0,25
|
TiO ±0,30
|
Fe2O3 | |
|---|---|---|---|---|---|---|---|---|
| USP-1 | 71.9 | 5.7 | 10.5 | 2.6 | 1.6 | 7.7 | - |
not more 0,1 |
| USP-1-amber | 67.3 | 4.5 | 6.4 | 5.6 | 1.8 | 8.5 | 5.0 | 0,9±0,2 |
Physicochemical parameters of USP-1 and USP-1- amber medical glass
|
The name of the indicator
|
The norm | |
USP-1 |
USP-1-amber | |
Thermal resistance, ºÑ, not less |
150 | 150 |
The coefficient of linear thermal expansion (α•106) in the temperature range (20-300) ºÑ, degree -1 |
5,6 |
6,5 |
|
Density, g/cm3 |
2,36-2,38 |
2,41-2,43 |
|
Hydrolytic resistance, consumption of hydrochloric acid solution HCl=0.02M, ml/g, not more. |
0,1 | 0,1 |
| Alkali resistance, mg/dm3 | 75-175 | 75-175 |
| Light transmission in the range (290-450) nm, % | 90-100 | 10-50*) |
| *) The permissible value of the light flux transmission in percentages depends on the thickness of the glass and is regulated by the State Pharmacopoeia of Ukraine for containers intended for medicinal products. | ||