Specialty Additives Available — Bulk Only

UV-1130 Liquid Benzotriazole UV Absorber

CAS 104810-48-2 · Formula C20H23N3O3 · MW 353.4 g/mol

A liquid hydroxyphenyl-benzotriazole UV absorber (CAS 104810-48-2) supplied as a polyethylene-glycol ester, for solvent- and water-borne coatings and clearcoats. Bulk, sourced to grade.

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CAS Number
104810-48-2
Formula
C20H23N3O3
Molecular Weight
353.4 g/mol
Material Family
Specialty Additives

What is UV-1130 and what is it used for?

UV-1130 (CAS 104810-48-2) is a liquid benzotriazole UV absorber supplied as a polyethylene-glycol ester of a hydroxyphenyl-benzotriazole propionic acid. Being liquid, it blends easily into solvent- and water-borne coatings and clearcoats, where it absorbs ultraviolet light in the film to protect the binder and the substrate. RawSource supplies UV-1130 in bulk against your grade and volume.

At a Glance
Material Family
Specialty Additives
Record Type
UVCB
Primary Role
UV Protection
Solubility
Practically insoluble in water; soluble in common organic solvents and compatible with the polymer matrix
Functional Roles
Applications & Use Cases
  • Surface UV screening to protect basecoat and substrate (Automotive and industrial clearcoats)
  • Easy-to-add liquid UV protection (Waterborne and solvent-borne coatings)
  • Slows film and substrate yellowing (Wood and plastic coatings)
Physical Properties
Form
Pale yellow to off-white liquid
Solubility
Practically insoluble in water; soluble in common organic solvents and compatible with the polymer matrix
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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Chemical Identity
CAS Number
104810-48-2
Molecular Formula
C20H23N3O3
Molecular Weight
353.4 g/mol
IUPAC Name
methyl 3-[3-(benzotriazol-2-yl)-5-tert-butyl-4-hydroxyphenyl]propanoate
PubChem CID
InChI Key
UJRDRFZCRQNLJM-UHFFFAOYSA-N
Synonyms & Trade Names
UV-1130 Benzotriazole liquid UV absorber PEG ester benzotriazole Comparable to Tinuvin 1130
Full Description

UV-1130 (CAS 104810-48-2) is a liquid benzotriazole UV absorber supplied as a polyethylene-glycol ester of a hydroxyphenyl-benzotriazole propionic acid. Being liquid, it blends easily into solvent- and water-borne coatings and clearcoats, where it absorbs ultraviolet light in the film to protect the binder and the substrate. RawSource supplies UV-1130 in bulk against your grade and volume.

RawSource supplies UV-1130 as a technical benzotriazole UV absorber comparable to Tinuvin 1130 (BASF). RawSource is an independent distributor and is not affiliated with, endorsed by, or sponsored by the brand owners; the brand names are used only to identify the comparable commercial grade.

Because UV-1130 is an ester of a glycol rather than a single crystalline compound, it is a substance of variable composition, so specify the grade by its Certificate of Analysis rather than by structure alone. Its liquid form is the advantage in coatings: it disperses without a separate dissolution step and resists blooming in cured films.

Applications

Automotive and industrial clearcoats

In clearcoats, UV-1130 absorbs ultraviolet light at the surface to protect the basecoat and substrate from fading and delamination. Its liquid form blends cleanly into solvent-borne clear systems.

Waterborne and solvent-borne coatings

In pigmented and clear coatings of both types, UV-1130 provides ultraviolet screening that is easy to add as a liquid, protecting the resin and any color below it.

Wood and plastic coatings

In coatings over wood and plastic, UV-1130 screens ultraviolet light to slow yellowing and surface degradation of both the film and the coated material.

Host polymers and typical use

UV-1130 is dispersed into the polymer or coating during compounding or formulation, where it absorbs ultraviolet light before it can break polymer chains, fade pigments, or dull the surface. The systems below are where UV-1130 is most often specified.

Host systemTypical roleForm supplied
Automotive and industrial clearcoatsSurface UV screening to protect basecoat and substrateLiquid
Waterborne and solvent-borne coatingsEasy-to-add liquid UV protectionLiquid
Wood and plastic coatingsSlows film and substrate yellowingLiquid

Typical use levels for polymer UV absorbers fall in the 0.1 to 1.0 percent range, set by part thickness, expected outdoor exposure, and the co-stabilizer package (commonly a hindered-amine light stabilizer). Confirm loading on the bench and the exact specification on the Certificate of Analysis for each lot.

Handling and regulatory status

UV-1130 is an industrial liquid UV absorber for coatings. Depending on grade it can be classified for effects from repeated exposure, as a skin sensitizer, and as hazardous to aquatic life, so use appropriate protective equipment, keep it out of drains and waterways, and follow the Safety Data Sheet.

Bulk UV-1130 Supply from RawSource

RawSource supplies UV-1130 benzotriazole UV absorber in bulk to coatings, plastics, and polymer compounding buyers and their purchasing teams. We source to your target grade, purity, and physical form across domestic and import channels, so we match specification, lead time, and landed cost to your program. Multiple qualified producers make UV-1130 to a common identity, which keeps supply competitive and available on demand.

Every lot ships with a Certificate of Analysis (CoA) and the current Safety Data Sheet (SDS). We source to order rather than carry fixed stock, so pricing and availability are confirmed by quote. Send your grade, annual volume, and any specification limits for a current bulk price.

Request a bulk UV-1130 quote

To buy UV-1130 in bulk from RawSource, send your target grade, physical form, packaging, destination, and any specification requirement, and we return a current bulk quote. A CoA and SDS accompany every shipment. Request a quote to get started.

Frequently Asked Questions

Why is UV-1130 supplied as a liquid?

UV-1130 is a polyethylene-glycol ester of a benzotriazole, which makes it a liquid rather than a powder. The liquid form blends directly into solvent- and water-borne coatings without a separate dissolution step and resists blooming in the cured film, which is why it is favored in clearcoats and other coating systems.

Does UV-1130 have a single fixed structure?

No. UV-1130 is an ester of variable chain length, a substance of variable composition rather than one crystalline compound, and it is registered under more than one CAS for the ester family. Specify the grade you want by its Certificate of Analysis, and RawSource supplies to that grade.

Is UV-1130 the same as Tinuvin 1130?

UV-1130 is the generic industry designation for this UV absorber; Tinuvin 1130 is a branded grade of BASF. They identify the same class of chemistry, and RawSource supplies UV-1130 as a technical grade comparable to Tinuvin 1130. RawSource is an independent distributor and is not affiliated with or endorsed by the brand owner. Confirm the exact grade and specification against the Certificate of Analysis.

Where can I buy bulk UV-1130?

RawSource supplies bulk UV-1130 to coatings, plastics, and polymer-compounding buyers in bag, drum, and larger quantities sized to your run. Because several qualified producers make UV-1130 to a common identity, supply is competitive and available on demand. Send your grade, volume, and destination for a current bulk quote; a CoA and SDS ship with every lot.

Is this UV absorber a restricted substance?

No. This grade is not the benzotriazole UV-328, which was listed under the Stockholm Convention on Persistent Organic Pollutants in 2023, and it is not one of the benzotriazoles on the EU REACH Candidate List of Substances of Very High Concern (UV-320, UV-326, UV-327, UV-329, and UV-350). It is an industrial additive for polymers and coatings and is not sold for food, drug, or cosmetic use unless a grade is specified for it. Always follow the Safety Data Sheet for handling and disposal.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.