4-Butylresorcinol CAS 18979-61-8 Supplier | Unilong
4-Butylresorcinol for Cosmetic Formulations
4-Butylresorcinol is a resorcinol-derived cosmetic ingredient used in skin-brightening and tone-evening skincare formulations. It acts as a tyrosinase inhibitor and is used in leave-on skincare products developed for a more even-looking complexion. Its limited water solubility makes a suitable carrier important when incorporating the powder into serums, emulsions and selected oil-based skincare systems.
Unilong handles raw-material procurement for industrial manufacturing and commercial distribution. This product is offered for skincare manufacturers, contract manufacturers and ingredient distributors sourcing material for production. Quotations address the commercial order volume, purity method, packaging and required supply documents. Quality-evaluation samples can be discussed for a planned commercial purchase against the same requested specification.
Technical Specifications
The following purity and water limits are purchase targets for quotation. The confirmed offer identifies the agreed specification, analytical methods and available supporting documents for the proposed material. HPLC-based requirements can be submitted with the required purity limit and method for a separate quotation response.
| Test item | Purchase target for quotation | Method |
|---|---|---|
| Appearance | White to off-white powder or crystalline solid | Visual |
| Purity target | ≥99.0% | GC |
| Water content target | ≤0.50% | Karl Fischer |
The compound has a melting range of approximately 50–55°C. Its relatively low melting range is relevant to handling in warm conditions and the preparation of a dissolved premix. Purchase specifications may also include limits for residual resorcinol, related substances, residual solvents or trace metals. The quotation identifies the requirements supported by the proposed material and its available supply documents alongside the commercial terms.
Applications in Skincare Manufacturing
Serums and Essences
4-Butylresorcinol is used as a brightening ingredient in facial serums and essences for uneven-looking tone. The powder is incorporated through a compatible premix because water-rich bases offer limited direct solubility. Carrier selection is particularly important for transparent products where crystals or colour changes would affect appearance. A suitable solvent balance supports incorporation, while clarity after dilution and during storage remains a requirement for the finished formulation.
Brightening Face Creams
Face creams provide an emulsion format for incorporating this active into leave-on skincare products. A suitable oil or polyol premix can introduce the ingredient into the base without relying on direct dissolution in water. The incorporation stage is selected around the carrier and emulsion process, with unnecessary heating kept to a minimum. Uniform distribution, emulsion appearance and texture are the main formulation considerations for this format.
Lightweight Lotions
Lightweight lotions offer a lower-viscosity format for facial and body skincare formulations containing a brightening ingredient. Their oil content and solvent balance may differ from those of richer creams, requiring a carrier suited to the actual base. The active premix needs to remain compatible as it is diluted into the lotion and cooled. Uniformity, crystal formation and dispensing behaviour are relevant to lotion manufacture and the selected bottle or pump.
Localised Cosmetic Care
Localised cosmetic products use this ingredient in formulations focused on the appearance of uneven tone in selected areas. The base and applicator may differ from those of a general facial moisturiser, giving this format its own formulation requirements. Active loading, carrier and product consistency are selected together for the intended finished cosmetic and its manufacturing process. Product-specific tolerability, stability and claim substantiation belong to the finished cosmetic's assessment rather than to the raw material specification.
Oil-Based Skincare Systems
Selected oil-based skincare systems provide a carrier route for incorporating 4-n-butylresorcinol into anhydrous products. Solubility depends on the chosen oil or solvent blend and the intended active loading. The formula needs to retain a homogeneous appearance after the dissolved material cools and throughout its storage conditions. Carrier choice, crystallisation behaviour and light-resistant packaging are relevant to producing bottled oils and similar leave-on formats.
Incorporation and Production Handling
The raw material is slightly soluble in water and can be introduced through a suitable oil or polyol premix. The carrier and premix concentration are selected for the intended base and active loading. Dissolution at the preparation temperature is only the first stage; the material also needs to remain incorporated after cooling, dilution and addition to the complete formula.
Low-temperature incorporation is preferable once a suitable premix has been prepared. Avoid unnecessary heating and prolonged exposure of the open raw material to air. Light-resistant finished-product packaging can form part of the finished cosmetic's stability programme. The complete formula, including its pH, other actives, preservative system and container, determines the appropriate processing and storage conditions.
For production supply enquiries, include the intended product base, purchasing specification and estimated commercial order quantity. Serum, cream, lotion and anhydrous manufacturing processes have different carrier and incorporation requirements. These details support specification matching for the proposed supply order. Unilong's quotation covers raw-material procurement and available product documents, with the manufacturer retaining responsibility for the finished formulation and production process.
Quality and Batch Documentation
Request the product specification, SDS and an applicable COA with your quotation. Available documents are identified for the proposed material and supply lot. Additional requests for chromatograms or information on residual resorcinol, related substances, residual solvents and trace metals are addressed according to the purchasing specification and data availability.
Purity, water content and appearance form the initial quality profile discussed for this powder. Where available, the proposed lot's COA provides its reported analytical results against the applicable specification. Documents needed for supplier qualification or approval of a commercial shipment can be included in the enquiry. The quotation confirms the document scope available for the material offered as part of the proposed supply order.
Packaging, Storage and Commercial Supply
Packaging enquiries can specify 1 kg aluminium foil bags or 25 kg drums. The confirmed quotation states the available pack format, net weight and order quantity. Pack size and total commercial order quantity are considered together for manufacturing procurement. Where a quality-evaluation sample is requested for an intended commercial purchase, its terms are addressed separately. MOQ is confirmed for the selected packaging and order.
Keep containers tightly closed in a cool, dry location protected from light, heat and moisture. Product-specific storage conditions and shelf life are confirmed with the supply documentation. Reseal opened inner packaging promptly and limit exposure during weighing or repeated sampling. Transport requirements are addressed using the applicable SDS and the confirmed shipping arrangement, including any route-specific handling requirements.
Unilong's general service guidance is sample dispatch within 2–3 days after confirmation and order shipment usually within 7–15 days against a confirmed order. For this product, availability, document requirements and the actual dispatch date are confirmed in the quotation. These periods concern dispatch; international transit and customs clearance require additional time.
Why Choose Unilong
Commercial Procurement and Quality Approval
Commercial enquiries are organised around production quantities, defined specifications and the required dispatch schedule. Quality-evaluation samples can be discussed for an identified commercial purchase, with sample quantity, charges and availability confirmed for that enquiry. Subsequent orders can refer to the accepted specification and agreed packaging.
Specification-Based Supply Discussions
Our quotation process brings technical requirements and commercial terms into the same discussion. The requested GC or HPLC method, purchase limits, document scope and packaging are addressed for the material proposed. This gives procurement and QA a defined basis for assessing the offer and carrying accepted requirements into the order.
Pre-Shipment Inspection Arrangements
For commercial supply orders, third-party pre-shipment inspection can be requested under Unilong's general service arrangements. The inspection scope, timing, charges and applicability to the proposed order are agreed in advance. Where a pre-shipment sample approval arrangement is agreed, the shipment schedule includes customer approval before release.
Our company information and general service policy provide further details about Unilong and its order arrangements.
Frequently Asked Questions
Can manufacturers request a sample before commercial procurement?
Quality-evaluation samples can be discussed for a planned commercial purchase. Include your company, manufacturing application and expected order quantity; sample availability and terms are confirmed for the enquiry.
Can you quote against my HPLC purity requirement?
We can review an HPLC-based enquiry. Include the required purity limit and method so we can check the proposed material and supporting data before quoting.
Which documents can I request with the quotation?
You can request the specification, SDS and an applicable COA. We will identify the available files and proposed supply lot in our response.
Can packaging and order quantity be discussed together?
Yes. State your preferred pack size and total quantity. Our quotation will set out the available packaging and applicable MOQ.
Do you accept laboratory projects or laboratory orders?
No. Unilong does not accept laboratory projects or laboratory orders. This product is supplied for industrial manufacturing and commercial distribution.
Request Your 4-Butylresorcinol Quotation
Contact Unilong with your company name, manufacturing application, purchasing specification, estimated commercial order quantity, destination and packaging preference. Include your required documents and dispatch date for a quotation covering the proposed raw material and supply arrangements.
