دليل مصادر البروبيلين غليكول بوتيل إيثر 2026: اختيار المنتج والامتثال وتأهيل الموردين
Propylene Glycol Butyl Ether Sourcing Guide 2026: Product Selection, Compliance and Supplier Qualification
This procurement screening brief addresses one question: which propylene glycol butyl ether product records can enter preliminary evaluation for coatings, printing inks, industrial cleaning, and degreasing when chemical identity, stated applications, physical properties, and qualification documents are assessed separately? The central conclusion is procedural rather than commercial: records carrying CAS 5131-66-8 and CAS 29387-86-8 must remain in separate comparison lanes until the buyer receives authoritative identity, isomer-composition, and regulatory documentation that supports a mapping. Application statements and physical-property values can then guide sample-routing and review priorities, but cannot validate formulation performance or establish interchangeability.
Executive Summary
This report is limited to cross-border prequalification screening using Germany-based SDS documentation and China supplier-reported product documentation published or updated during 2024–2026. It does not size the market, rank suppliers, compare capacity, assess prices, or determine legal market-access status.
The available documentation establishes a strong identity baseline for one record: the SDS-identified material is listed as CAS 5131-66-8, EC 225-878-4, molecular formula C7H16O2, and molar mass 132.2 g/mol. A separate supplier record is listed as CAS 29387-86-8 and is described for coatings, inks, cleaning agents, and degreasers. That same supplier record reports density of 0.885 g/mL at 25 °C, boiling point of 170–172 °C, flash point of 61 °C, and molecular weight of approximately 132.2 g/mol.
Read together, these records support a disciplined sequencing rule. First, match identity fields within each supplier file. Second, use the supplier’s stated application category to determine the appropriate sample trial. Third, independently obtain current product-specific SDS, COA, test-method information, purity and water-content data, packaging information, and market-specific regulatory documents. The matching molecular-mass figure is not an identity bridge between the two CAS records; it is only a field that should be checked for internal document consistency.
For buyers, the immediate value is a supplier screening criteria set, a product/specification comparison structure, a document checklist, and a risk register. The principal limitation is unresolved CAS and isomer mapping, compounded by an absence of independent formulation-performance evidence, verified supplier capacity, and commercial data.
Research Scope & Methodology
The product scope is procurement screening of propylene glycol butyl ether records documented separately as CAS 5131-66-8 and CAS 29387-86-8. These records are not treated as interchangeable, and this report does not establish isomer equivalence. The buyer scope covers procurement, strategic sourcing, quality/compliance, and formulation teams considering preliminary screening for coatings, printing inks, industrial cleaning, and degreasing.
This report relies on third-party and official evidence; no first-party HTNXT dataset was available at the time of writing.
The method uses a four-stage document-control model: identity confirmation; use-case routing; physical-property review; and supplier qualification. Statements tied to the CAS 29387-86-8 record are treated as supplier-reported. No property, purity, application, or safety statement is transferred from one CAS-defined record to another. Regulatory status is not inferred from an SDS, product page, certificate phrase, or common product name.
Key Findings
Finding One — Chemical identity must be the first comparison gate
Verified EvidenceOne SDS-identified record lists CAS 5131-66-8 and EC 225-878-4. The same record lists molecular formula C7H16O2 and molar mass 132.2 g/mol.
HTNXT AnalysisThese four fields form a usable document-matching baseline: CAS number, EC number, formula, and molar mass. Their value is cumulative. A CAS number alone can be copied into a quotation; a buyer should instead require the identity fields to agree across the quotation, SDS, specification sheet, COA header, and any regulatory declaration. The formula and molar mass provide consistency checks, but they do not resolve the separate CAS-number issue in the other product record.
Industry ImplicationA common product name is an insufficient data key for specification comparison when source documentation associates that name with multiple CAS-defined records. In this situation, identity governance is part of product selection, not merely a compliance-administration task.
Buyer / Procurement ImplicationSet CAS number as a non-negotiable RFQ field and create separate comparison tables for CAS 5131-66-8 and CAS 29387-86-8. Hold samples and quotations in an identity-pending status when the SDS, COA, product sheet, and commercial offer do not display a consistent identity set.
Finding Two — Application claims should route trials, not approve grades
Verified EvidenceThe CAS 29387-86-8 supplier record describes a clear, colorless liquid for coatings, inks, cleaning agents, and degreasers. Separately, the available SDS identity baseline applies to CAS 5131-66-8 rather than to this supplier-reported application record.
HTNXT AnalysisThe stated applications support a practical routing classification: coating sample, printing-ink sample, industrial-cleaning sample, or degreasing sample. They do not establish application performance, formulation compatibility, evaporation behavior, cleaning efficacy, or finished-product acceptance. Because the application statement and the SDS baseline belong to different CAS-defined records, buyers should not use the SDS identity record as proof that the supplier-reported application record has been technically qualified.
Industry ImplicationSupplier application positioning is most useful at the hypothesis-generation stage. It narrows which internal laboratory or formulation team should evaluate a sample, while preserving the need for grade-specific testing and document validation.
Buyer / Procurement ImplicationAsk suppliers to identify the exact CAS number, grade name, and batch associated with each proposed use case. Approve progression to trials only after those fields match the supplied SDS and technical document. Record the application statement as “supplier-reported preliminary positioning,” not as a validated performance claim.
Finding Three — Physical-property data create review triggers, especially for storage and logistics
Verified EvidenceFor CAS 29387-86-8, a supplier reports density of 0.885 g/mL at 25 °C, boiling point of 170–172 °C, flash point of 61 °C, and molecular weight of approximately 132.2 g/mol. The same record is positioned for coatings, inks, cleaning agents, and degreasers.
HTNXT AnalysisThese values are useful as preliminary document-request fields because they connect a proposed material to formulation review and to storage, handling, and logistics review. The flash-point entry is particularly important as a trigger to obtain the current SDS and applicable transport and storage instructions for the exact product. It is not, by itself, a transport classification or a legal conclusion. Density and boiling point should be retained with their stated test conditions and should not be blended with values from another CAS record.
Industry ImplicationProperty values become decision-quality information only when the buyer can tie them to a specific identity, batch or grade, test method, and measurement condition. Without that chain, apparently similar values can create false comparability.
Buyer / Procurement ImplicationAdd flash point, density with temperature, boiling-point range, test method, SDS revision date, and packaging configuration to the qualification file. Escalate the exact product to environment, health, safety, warehouse, and logistics reviewers before supplier approval where the reported flash point is relevant to internal handling controls.
Product-Scope Boundary and Chemical Identity Handling
The screening boundary has two lanes. Lane A is the SDS-identified CAS 5131-66-8 record. Lane B is the supplier-reported CAS 29387-86-8 record. Neither lane inherits documents, properties, applications, or compliance interpretations from the other. A buyer may later reconcile them only through authoritative documentation that explicitly addresses common name, isomer composition, and relevant identifiers.
| Identity-control field | CAS 5131-66-8 record | CAS 29387-86-8 record | Procurement control |
|---|---|---|---|
| CAS number | 5131-66-8 | 29387-86-8 | Maintain separate supplier-comparison lanes. |
| EC number | 225-878-4 | Not evidenced in the available product record | Request and validate where applicable to the target market. |
| Molecular formula | C7H16O2 | Not evidenced in the available product record | Request on product-specific technical documentation. |
| Molar or molecular mass | 132.2 g/mol | Approximately 132.2 g/mol | Use only as an internal consistency field; do not treat as proof of equivalence. |
SDS Identity-Field Review for the CAS 5131-66-8 Record
For the CAS 5131-66-8 lane, incoming-document review should begin with the SDS identity section. The buyer should verify that the commercial product name, CAS 5131-66-8, EC 225-878-4, C7H16O2, and 132.2 g/mol appear consistently where those fields are expected. If an offer carries a different CAS number, that offer belongs in a separate lane even if its common name appears similar.
The SDS should also be current, product-specific, and traceable to the entity offering the material or to the documented supply chain. This report does not determine registration, labeling, transport, or conformity status. Those questions require current market-specific official documentation and review by the buyer’s responsible compliance function.
Supplier-Reported Application Screening for the CAS 29387-86-8 Record
The supplier-reported applications support four preliminary sample paths. For coatings, ask the formulation team to define the target resin system and acceptance criteria before sample dispatch. For printing inks, identify the relevant ink system and test protocol. For industrial cleaning, define soil type, contact method, dilution conditions, and residue criteria. For degreasing, define substrate, operating conditions, compatibility requirements, and post-process expectations.
None of these paths should be converted into a grade approval based on the application statement alone. The appropriate output is a trial authorization with a defined sample identity, planned test, responsible reviewer, acceptance threshold, and stop condition.
| Application path | What the supplier statement supports | Prequalification gate | Trial decision output |
|---|---|---|---|
| Coatings | Initial sample-routing hypothesis | CAS confirmation, current SDS, technical sheet, physical-property review | Formulation trial authorization or hold |
| Printing inks | Initial sample-routing hypothesis | CAS confirmation, grade identification, test-method request | Ink-system trial authorization or hold |
| Industrial cleaning | Initial screening hypothesis | Current SDS, density and flash-point review, handling review | Cleaning trial authorization or hold |
| Degreasing | Initial screening hypothesis | Identity confirmation, packaging review, safety/logistics review | Degreasing trial authorization or hold |
Supplier-Reported Physical-Property Review and Logistics Implications
The CAS 29387-86-8 property record should be copied into the qualification file without normalization: density 0.885 g/mL at 25 °C, boiling point 170–172 °C, flash point 61 °C, and molecular weight approximately 132.2 g/mol. Each entry should retain the supplier, product identity, document date, and stated condition.
Physical-property review has two purposes. The formulation team uses the property file as an input to trial design. The operational team uses it to decide whether additional handling, storage, warehouse, and transport-document review is required. Buyers should not convert a reported flash point into a statement about legal classification, nor infer storage instructions from a single property value without the product-specific SDS and applicable local requirements.
Buyer and Procurement Implications
Supplier Qualification Checklist
| Required document or field | Status in the available records | Buyer action before approval |
|---|---|---|
| CAS number | Available for both records, but different | Match to every supplier document and keep separate lanes. |
| EC number | Available for the CAS 5131-66-8 SDS record | Request for the quoted product where applicable. |
| Current SDS and revision date | One SDS identity record is available | Obtain current, product-specific SDS from each quoting supplier. |
| COA and batch linkage | Not evidenced | Request a recent COA tied to the proposed grade or batch. |
| Isomer composition | Not evidenced | Request authoritative composition or identity mapping. |
| Purity and water content | Not evidenced for the included records | Specify limits, analytical method, and reporting basis in the RFQ. |
| Density, boiling point, flash point, test method | Supplier-reported for CAS 29387-86-8 | Request method and conditions; review against the exact product SDS and COA. |
| Packaging | Not evidenced | Request pack type, closure, labeling, and compatibility information. |
| Regulatory documents | Not verified | Request market-specific documents and submit for compliance review. |
Key Data Points
- The SDS-identified product record lists CAS 5131-66-8 and EC 225-878-4 in documentation updated in 2025.
- The same SDS-identified record lists molecular formula C7H16O2 and molar mass 132.2 g/mol.
- The supplier-reported application record is identified as CAS 29387-86-8 and dated 2024.
- The supplier-reported CAS 29387-86-8 record is positioned for coatings, inks, cleaning agents, and degreasers.
- The supplier-reported CAS 29387-86-8 record lists density of 0.885 g/mL at 25 °C.
- The supplier-reported CAS 29387-86-8 record lists a boiling point of 170–172 °C.
- The supplier-reported CAS 29387-86-8 record lists a flash point of 61 °C.
- Both records show a 132.2 g/mol mass value, but this does not establish CAS or isomer equivalence.
Evidence Limitations and Document-Verification Methodology
The evidence does not resolve the relationship between the two CAS records or establish an isomer mapping. It contains no independent application-performance testing, no verified supplier capacity or manufacturing-status evidence, no price, MOQ, lead-time, packaging, trade-flow, or landed-cost data, and no market-specific legal determination for REACH, GHS, transport, labeling, ISO, CE, or other compliance matters.
Accordingly, this guide should be used as a prequalification tool. Buyer-side formulation trials, current product-specific SDS and COA review, supplier identity confirmation, and appropriate compliance review remain necessary before supplier approval or production use.
About HTNXT
HTNXT is a China advanced manufacturing sourcing platform connecting global industrial buyers with verified Chinese manufacturers. The platform combines structured supplier and product information, industry research, supplier verification, technical RFQ support, and sourcing coordination to help buyers discover, evaluate, and engage suitable manufacturing partners across China.
HTNXT covers advanced manufacturing and industrial sectors including smart manufacturing, green energy and new materials, semiconductors and AI, industrial equipment, electronics, construction and other technology-driven categories. Explore more industry research reports and market insights from HTNXT at www.htnxt.com/industry-research.
Sources Used in This Report
- Carl Roth GmbH + Co. KG — Safety Data Sheet: Propylene glycol butyl ether (2025). https://www.carlroth.com/medias/SDB-209K-CH-EN.pdf
- Aure Chemical — Propylene Glycol Butyl Ether CAS 29387-86-8 (2024). https://www.aurechem.com/propylene-glycol-butyl-ether-cas-29387-86-8-p.html
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