The Ultimate Guide to Choosing Optical Brightener OB-1

Performance characteristics of optical brightener OB-1

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The appearance of whitening agent OB-1 is bright yellow green crystalline powder; Content ≥ 98%; Fineness ≥ 200 mesh; UV absorption ≥ ; The melting point is 350-355 ℃, which is suitable for high temperature production; Color light is divided into blue color light and blue purple color light. At present, blue color light is widely used and has good whitening effect; Insoluble in water, soluble in common organic solvents; Odorless and stable performance; The absorption spectrum has a wavelength of 374 nm, has strong fluorescence, and the emission wavelength is 434 nm.

Optical brightener ob-1 solubility

Optical brightener OB-1 has very low solubility, insoluble in water and soluble in common organic solvents.

OB-1 has low solubility in most organic solvents, has good thermal stability, and can withstand a high temperature of 375 ℃. 

OB-1 is suitable for engineering plastics with high melting point, such as alum resin.

Fluorescent whitening agents OB and OB-1 are very similar in name, but their application fields and methods are still very large. Today, I will analyze the specific differences between the two fluorescent whitening agents

Fluorescent brightener ob

Molecular formula: c26h26so2n2

Molecular weight: 430.

C.I:184

CAS NO:-64-5

Appearance: light yellow powder

Melting point: 196-203 ℃

Decomposition temperature: over 220 ℃

Standard: Hg / t-

Color light: bright blue light

UV absorption: -

Volatile matter: ≤ 0.2%

Ash content: ≤ 0.3%

Link to Ogilvy

Transmittance: 450nm ≥ 96%, 500nm ≥ 97%

Fineness: through 100 mesh

Fluorescent Whitening Agent OB has stable chemical properties and high whiteness. It is widely used in many fields, such as plastics, paint and ink. Fluorescent whitening agent ob can keep the product for 3-5 years without fading, so manufacturers with higher requirements for product grade will generally choose fluorescent whitening agent ob.

Fluorescent brightener ob

Fluorescent brightener OB-1

Molecular formula: c28h18n2o2

Molecular weight: 414.

CI:393

CAS:-45-5

Appearance: bright yellow green crystalline powder

Color light: blue light or blue violet light

Melting point: 350-355 ℃

Content: ≥ 98%

Fineness: ≥ 200 mesh

UV absorption: ≥

Volatile matter: ≤ 1%

Ash content: ≤ 1%

Fluorescent whitening agent OB-1 is a professional chemical additive in plastics. There are two kinds of hues, OB-1 green and OB-1 yellow. Fluorescent whitening agent OB-1 is the most heat-resistant one among all whitening agents. Most plastics and engineering plastics are used more, and the price is a little cheaper than ob.

Fluorescent brightener OB-1

The above is the difference between Fluorescent Whitening Agent OB and OB-1. The choice of whitening agent depends on the product. Try it several times.

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