Lab chemical glass reactor - borosilicate glass reactor
Laboratory-scale glass reactors must have good chemical properties as laboratory equipment. Then the glass reactor must have excellent resistance to quenching and rapid heat, low expansion coefficient, and corrosion resistance. It is suitable for use as a laboratory glass reactor.
Many people have questions about why glass reactor vessels use borosilicate glass, which increases the cost of purchasing glass reactor equipment.
Today we will talk about why laboratory glass reactors are made of high borosilicate glass.
The specific physical and chemical properties of borosilicate glass are shown in the following table:
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Silicon content
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More than 80%
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Strain temperature
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520 ℃
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Annealing temperature
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560 ℃
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Softening temperature
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820 ℃
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Refractive index
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1.47
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Light transmittance (2 mm)
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92 %
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Elastic Modulus
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76KNmm - 2
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Tensile strength
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40- 120Nmm - 2
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Glass stress optical constant
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3.8 * 10-6 square millimeters
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Processing temperature（ 104dpas ）
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1220 ℃
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Linear expansion coefficient（ 20-300 ℃）
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3.3 * 10-6 K * (-10)
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Density（20 ℃）
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2.23gcm * (-10)
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Specific heat
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0.9jg - 1K * (-10)
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Thermal conductivity
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1.2Wm - 1K * (-10)
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Water resistance (International Organization for Standardization 719)
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Level 1
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Acid resistance (International Organization for Standardization 195)
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Level 1
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Alkali resistance (International Organization for Standardization 695)
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Level 2
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The difference between borosilicate glass and ordinary glass.
The borosilicate glass contains boron trioxide and silicon dioxide in an amount higher than that of ordinary glass. The content of boron trioxide is even 14% and the content of silica is 80%.
Ordinary glass has a silicon content of about 70%, and ordinary glass generally does not contain boron.
The borosilicate glass has a low expansion coefficient, a high softening point, and is resistant to rapid cooling and rapid heat. The expansion coefficient of the high borosilicate glass is about 32 to 33 * 10 (-7).
Ordinary glass has an expansion coefficient of about 80 to 100 * 10 (-7), and is resistant to rapid cooling and heat up to 200 to 300 ° C.
The glass reactors produced by ZZKD glass reactor manufacturer are made of high borosilicate glass with good chemical properties for a wide range of applications.
Welcome to buy!