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HomeProduct name listOctabenzone

Octabenzone

Synonym(s):[2-Hydroxy-4-(octyloxy)phenyl]phenylmethanone;2-Benzoyl-5-octyloxyphenol;4-(Octyloxy)-2-hydroxybenzophenone

  • CAS NO.:1843-05-6
  • Empirical Formula: C21H26O3
  • Molecular Weight: 326.43
  • MDL number: MFCD00027327
  • EINECS: 217-421-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-12-18 13:37:16
Octabenzone  Structural

What is Octabenzone ?

Description

Octabenzone appears as light yellow/yellowish crystals/fine powder and is odourless and freely soluble in benzene, n-hexane, and acetone; slightly soluble in ethanol; and very slightly soluble in ethane dichloride. Octabenzone is a light stabiliser with good performance, capable of absorbing the UV radiation of 240–340 nm wavelength with the characteristics of light colour, non-toxicity, good compatibility, small mobility, easy processing, etc. Octabenzone protects the polymer to its maximum extent and helps to reduce its colour. It can also delay the yellowing and impede the loss of its physical function. Industrial applications of octabenzone is very extensive and applied to PE, PVC, PP, PS, PC, organic glass, polypropylene fibre, ethylene-vinyl acetate, etc. Also, octabenzone has very good light-stability effect on drying phenol aldehyde, varnish of alcohol and acname, polyurethane, acrylate, expoxnamee, etc. The major uses include UV stabiliser, for example, polyethylene and polypropylene fibres.

Chemical properties

Light yellow powder

The Uses of Octabenzone

To stabilize polyethylene against deterioration by ultraviolet light.

The Uses of Octabenzone

HOBPs are UV absorbers for insulating plastics, which can be incorporated with active layers to increase the stabilization of organic solar cells (OSCs). It may be incorporated in parylene C films to enhance the light stability, which can be potentially used as a moisture transfer membrane for electronic boards and photovoltaics.

Preparation

Preparation by reaction of n-octyl chloride with 2,4-di-hydroxybenzophenone,
in the presence of a mixture of sodium carbonate, triethylamine and potassium iodide in refluxing butanol for 15 h (90%); 
in the presence of potassium carbonate in cyclohexanone at 145° for 5 h (66%);
in the presence of potassium hydroxide and antimony triiodide in diethylene glycol at 150° for 1 h (93%);
in the presence of sodium bicarbonate and potassium iodide in 1-methylpyrrolidone for 2 h at 150° (96%).

Definition

ChEBI: Octabenzone is a member of benzophenones.

General Description

2-Hydroxy-4-(octyloxy)benzophenone (HOBP) is a UV based absorber that has 2-hydroxybenzophenone as a functional group. It can be used to enhance the light fastness of polymers using UV absorbers with sulfur and phosphorus compounds.

Flammability and Explosibility

Not classified

Properties of Octabenzone

Melting point: 47-49 °C(lit.)
Boiling point: 424.46°C (rough estimate)
Density  1.160g/cm3
refractive index  1.6000 (estimate)
Flash point: 102℃
storage temp.  Sealed in dry,Room Temperature
solubility  Chloroform (Slightly), Methanol (Slightly, Sonicated)
form  Solid
pka 7.59±0.35(Predicted)
Specific Gravity 1.160
color  Off-White to Light Yellow Low-Melting
Merck  14,6742
BRN  1915198
CAS DataBase Reference 1843-05-6(CAS DataBase Reference)
NIST Chemistry Reference Octabenzone(1843-05-6)
EPA Substance Registry System 2-Hydroxy-4-octyloxybenzophenone (1843-05-6)

Safety information for Octabenzone

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H317:Sensitisation, Skin
Precautionary Statement Codes P280:Wear protective gloves/protective clothing/eye protection/face protection.

Computed Descriptors for Octabenzone

InChIKey QUAMTGJKVDWJEQ-UHFFFAOYSA-N

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