Chinese MPD is typically 40–60% lower cost than equivalent Western-produced MPD; competitive manufacturing and scale benefits passed through to export price

Non-DG sea freight classification means simple B/L booking, no DG surcharge, no vessel acceptance complications, and standard container logistics

China's major chemical export ports (Shanghai, Ningbo, Tianjin, Qingdao, Guangzhou) serve all major global trade lanes with frequent sailings

Established exporters provide REACH OR letters, GHS SDS in destination language, COA per batch, and TSCA certification for US buyers

Top-tier Chinese MPD producers now supply at ≥99.5% GC purity with APHA ≤10 cosmetic grade, fully competitive with Western specifications

• Business licence - verify company registration, registered capital, and business scope includes chemical manufacture or trade
• Export licence - confirm the company is registered for chemical export (customs registration code visible)
• Sample COA - request a representative COA from a recent production batch; check purity, water content, colour, refractive index vs your spec
• SDS - request GHS-compliant SDS in English (and your destination language if applicable); check all 16 sections are complete and consistent
• REACH OR letter (EU buyers) - confirm they hold an EU OR appointment or can provide one
• ISO 9001 or equivalent - quality management system certification; indicates process control

1. Request 500 mL–1 L sample with COA; pay sample freight
2. Receive sample, verify COA against your incoming QC results - key tests: GC purity, refractive index, water content (Karl Fischer), APHA colour
3. Run formulation trial with sample MPD in your specific application (polyester synthesis, PU trial, cosmetic formulation)
4. Compare trial results against your reference standard (incumbent supplier or internal spec)
5. Document trial results in qualification report; confirm "pass" before commercial order
6. For cosmetic grade: additionally test heavy metals (ICP), microbial limits (if required by your cosmetic safety assessment)

For high-volume or mission-critical supply, a factory visit or third-party audit (SGS, Intertek, Bureau Veritas) provides the highest level of assurance. Key areas to assess:

• Production capacity and actual vs nominal utilisation
• QC laboratory capabilities (GC, Karl Fischer, refractometer)
• Storage and handling conditions (contamination prevention)
• EHS compliance (relevant for cosmetic and food-adjacent buyers)
• Export documentation process and track record

✅ Widely available; easy to handle manually in lab/small production. ⚠️ Highest cost per MT; steel drums require proper disposal or reconditioning.

✅ Good cost/handling balance; forklift stackable; pallet-based delivery. ⚠️ IBC return/disposal logistics; verify IBC suitability (UN HDPE or metal cage).

✅ Lowest per-MT cost; no packaging waste; reusable tank. ⚠️ Requires bulk liquid storage tank and unloading pump at destination; ISO tank hire fee applies.

• Origin ports: Shanghai, Ningbo (most common for East China chemical exporters); Tianjin (North China); Guangzhou/Shenzhen (South China)
• Container type: 20ft FCL standard dry container for drums/IBCs; ISO tank for bulk
• Transit times (indicative): Europe ~25–35 days; US East Coast ~28–35 days; SE Asia ~7–14 days; Middle East ~18–28 days; Australia ~18–25 days
• No DG surcharge - MPD ships as general cargo; quote ocean freight without DG surcharge from all carriers
• Book sailing 2–3 weeks in advance for FCL; 3–4 weeks for ISO tank (tank sourcing + cleaning lead time)

• Export HS code: 2905.3990
• No export licence required for MPD
• Chinese export VAT refund: check current MPD refund rate (HS 2905.39 may be eligible for 9–13% VAT rebate - this benefit is typically built into the FOB price)
• Provide: commercial invoice, packing list, contract, export customs declaration
• Customs clearance time: 1–3 working days for standard chemical export at major Chinese ports

• HS import code: 2905.39 (verify 10-digit national code with customs broker)
• EU: standard customs declaration; MFN duty rate ~0% for 2905.39; VAT on import value; REACH-compliant SDS required
• US: CBP entry (Form 7501); MFN + Section 301 tariff (verify current rate); TSCA positive certification on entry; ISF filing 24h before loading
• Typical customs clearance time: 1–3 days with complete documentation; delays often caused by missing or incorrect SDS or COO

• ☐ Confirm CAS 2163-42-0 and grade (industrial / cosmetic)
• ☐ Receive and review supplier's COA (sample batch)
• ☐ Receive GHS SDS in your language; confirm 16 sections complete
• ☐ EU buyers: receive REACH OR letter; verify ECHA registration number
• ☐ US buyers: confirm supplier can provide TSCA positive certification
• ☐ Request and test qualification sample; run incoming QC + formulation trial
• ☐ Agree Incoterms, packaging format, and price per MT
• ☐ Confirm packaging (drums / IBC / ISO tank) and verify your storage can receive it

• ☐ Place purchase order with product name, CAS, grade, quantity, packaging, Incoterms, and destination
• ☐ Confirm payment terms (L/C, T/T 30% deposit + 70% on B/L copy, or open account for established buyers)
• ☐ Nominate your freight forwarder (if FOB); or confirm supplier's forwarder (if CIF)
• ☐ Request pre-shipment COA from the specific production batch
• ☐ Instruct supplier to confirm "Non Dangerous Goods" on B/L
• ☐ US buyers: confirm TSCA certification wording on invoice

• ☐ Cross-check shipping documents against original order: quantity, grade, COA batch number, B/L
• ☐ Inspect packaging on receipt (no visible damage, leakage, or container deformation)
• ☐ Run incoming QC: refractive index + APHA (immediate); KF + GC purity (within 48h)
• ☐ Compare incoming QC results against supplier COA - raise NCR immediately if out-of-spec
• ☐ Store in designated area with correct labelling; update inventory management system
• ☐ Provide feedback to supplier on quality and documentation; build supplier score card
• ☐ File documents for regulatory records (SDS, COA, REACH OR letter) per your document control system

Q1: How do I know if a Chinese MPD supplier is a manufacturer or just a trading company?

The most reliable verification steps are: (1) request the company's Chinese business licence (营业执照) - the business scope (经营范围) will state whether they manufacture chemicals (生产) or trade chemicals (贸易); (2) ask for the production facility address and verify it on Google Maps / Baidu Maps - a manufacturer will have a factory in a chemical industrial park, not just an office in a city centre; (3) ask for a factory audit or at minimum a video call walking through their facility; (4) use Alibaba's "Verified Supplier" or "Manufacturer" badge as a first filter, but verify independently - these badges are supplier-reported and not always independently audited; (5) check the company in the Chinese National Enterprise Credit Information System (gsxt.gov.cn) using the company's unified social credit code - this shows their registration status, legal representative, and whether they have any administrative penalties. Trading companies are not inherently inferior to manufacturers for MPD, but you should know what you are buying and price accordingly.

Q2: What are the typical payment terms for MPD from Chinese exporters?

Payment terms vary by buyer-seller relationship maturity and order size. Common structures are: (1) T/T 30% advance + 70% against copy of B/L - most common for new relationships; protects seller against non-payment; buyer gets B/L copy (sufficient for customs) before releasing final payment; (2) T/T 100% in advance - sometimes demanded by sellers from unknown buyers; not recommended unless you have thoroughly qualified the supplier; (3) Irrevocable L/C at sight - protects both parties; adds bank charges (~0.5–1% of invoice value); preferred for large orders with new suppliers; (4) Open account (Net 30–60 days) - available with established suppliers after track record of payments; lowest admin burden; (5) T/T 100% against full set of original B/L documents - used for CIF transactions; seller surrenders control at payment. For your first order with a new supplier, T/T 30/70 with B/L copy or L/C at sight is the recommended balanced approach.

Q3: Can I consolidate MPD with other chemicals from China in one shipment?

Yes - MPD's non-DG classification makes it straightforward to consolidate with other chemicals in a single container shipment. In an LCL (Less than Container Load) consolidation, MPD can share space with other non-DG chemicals without special segregation requirements. In an FCL shipment, MPD can be combined with other non-DG chemicals from the same Chinese supplier or from different suppliers via a consolidation freight forwarder (co-loading). The main practical consideration is chemical compatibility in the unlikely event of container damage and leakage - MPD is fully water-miscible and reactive with isocyanates, so avoid packing adjacent to isocyanate products in the same container without separation. Otherwise, MPD's benign hazard profile makes it one of the easiest specialty chemicals to handle in mixed-product consolidations.

Q4: What should I do if my incoming MPD fails the refractive index test?

An out-of-specification refractive index on arrival is a significant finding and should trigger an immediate non-conformance report (NCR). The RI specification for MPD is nD²⁰ = 1.445–1.447; a reading outside this range indicates either wrong product (possibly 1,3-propanediol, propylene glycol, or another glycol of similar appearance), significant contamination, or degradation. Immediate steps: (1) quarantine the batch - do not use in production; (2) notify the supplier in writing with your measured RI value and the COA RI value; (3) send a counter-sample back to the supplier for their re-test (retain your own sealed portion for reference); (4) if RI is substantially off (e.g., below 1.440 or above 1.450), also run GC to confirm identity - PG has RI ~1.432; 1,3-PDO has RI ~1.439; diethylene glycol has RI ~1.447 (close to MPD - run GC to distinguish); (5) if confirmed non-conforming, invoke the purchase contract quality clause for replacement or credit. Most reputable Chinese suppliers will replace or refund non-conforming batches - document the dispute process in writing from the start.

Q5: How long does sea freight from China to Europe take and how does this affect my ordering cycle?

Sea freight from Chinese ports (Shanghai, Ningbo) to Northwest Europe (Rotterdam, Hamburg, Felixstowe) typically takes 28–35 days transit, and total lead time from order confirmation to delivered goods at your warehouse is typically 35–50 days when accounting for production and packing lead time (3–7 days), export customs clearance (1–3 days), transit time (28–35 days), import customs clearance (1–3 days), and inland delivery (1–3 days). This means to maintain uninterrupted production, you should place a new order when your on-hand stock reaches approximately 6–8 weeks of consumption - equivalent to about 1.5× your transit time. For monthly MPD consumption of 2 MT, this implies ordering when stock drops to ~3 MT; for 5 MT/month, order when stock drops to ~7.5 MT. Establish a simple min/max inventory policy based on your actual monthly consumption rate and this lead time framework.

Q6: How do I get a quote for MPD from Sinolook Chemical?

Contact Sinolook Chemical directly with your requirements for a prompt quotation. To receive an accurate quote, please provide: (1) product: 2-methyl-1,3-propanediol, CAS 2163-42-0; (2) grade: industrial or cosmetic; (3) quantity: MT per order or per year; (4) packaging: drums / IBC / ISO tank; (5) destination port / country; (6) Incoterms preference (FOB or CIF); (7) any specific documentation requirements (REACH OR, TSCA cert, language-specific SDS). We will provide: firm price quotation; COA from recent production batch; GHS SDS in your language; REACH OR letter (EU buyers); TSCA certification text (US buyers); and sample availability for qualification. We typically respond to quote requests within 24 hours on business days. Contact us at: WhatsApp 0086 18150362095 · WeChat/Tel 0086 13400715622 · Email sales@sinolookchem.com.