Unionchem operates ISO 9001:2015 certified production for modified starch products, with in-house quality control testing against API 13A/ISO 13500 parameters before each batch ships. Buyers sourcing for oilfield or mud engineering applications can request a Certificate of Analysis (COA) matched to each shipment lot, along with MSDS and technical data sheets for import documentation and internal formulation review.
As a China-based supplier of natural hydrocolloids and modified starch derivatives since 2010, Unionchem exports across drilling fluid, food, and industrial cellulose product lines to distributors and end users in multiple regions. This positions Drilling Starch API Grade within an established export supply chain rather than a standalone or newly onboarded product line.
Drilling Starch API Grade is a modified starch (CAS # 9005-25-8) engineered as a fluid loss additive for water-based drilling mud systems. It supports clay particles in forming a smooth, low-permeability filter cake that reduces filtration loss and protects the well wall.
The product controls the rate at which drilling fluid migrates into permeable formations by strengthening filter cake integrity. It applies across oilfield drilling, water well drilling, and civil engineering drilling, remaining stable from fresh water through saturated salt water mud systems.
Parameter |
Specification |
Suspension properties — Viscometer dial reading at 600 r/min in 40 g/L salt water |
Max. 18 |
Viscometer dial reading at 600 r/min in saturated salt water |
Max. 20 |
Filtrate volume in 40 g/L salt water (mL) |
Max. 10 |
Filtrate volume in saturated salt water (mL) |
Max. 10 |
Particle size |
Min. 90% pass through 60 mesh (250 micron) |
CAS Number |
9005-25-8 |
Standard compliance |
API 13A / ISO 13500 |
Certification |
ISO 9001:2015 |
Every production batch is tested against these limits before release. Buyers can request the batch-specific COA alongside the shipment.
Pricing is quoted per metric ton on FOB Qingdao or CIF destination-port terms, and varies with order volume, packaging specification, and current raw material cost. Contact Unionchem with your target order volume and destination port to receive a formal quotation — first-time buyers can request pricing for trial container quantities as well as full container load (FCL) volumes.
25 kg net multiply paper bags, shrinkwrapped on pallets (standard export packaging)
Custom packaging and labeling available for qualified order volumes — specify requirements when requesting a quote
Unionchem provides free samples of Drilling Starch API Grade for qualification testing before bulk order. Standard sample lead time and bulk production lead time depend on current order volume — request current lead times when submitting your inquiry so they can be confirmed against production scheduling at the time of your order.
Standard export documentation includes Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), and packing list. Unionchem ships from Qingdao port under FOB, CIF, or other Incoterms as agreed at quotation. Confirm your required documentation (e.g., Certificate of Origin, fumigation certificate for wood pallets) at the inquiry stage so it can be prepared with the shipment.
Q1: What is the minimum order quantity (MOQ) for Drilling Starch API Grade?
A1: MOQ depends on packaging format and destination. Contact Unionchem with your target volume and destination port for a specific MOQ and price quotation.
Q2: Can I get a free sample before placing a bulk order?
A2: Yes. Unionchem provides free samples for qualification testing. Submit an inquiry with your shipping address to request one.
Q3: What certifications does Unionchem provide with each shipment?
A3: Each batch ships with a Certificate of Analysis (COA) confirming compliance with API 13A/ISO 13500, along with MSDS on request. Production is under ISO 9001:2015 certification.
Q4: What are the payment terms for bulk orders?
A4: Payment terms are confirmed at the quotation stage and typically follow standard international trade terms (e.g., T/T deposit with balance before shipment, or L/C for qualified orders). Discuss your preferred terms when requesting a quote.
Q5: What Incoterms do you support — FOB, CIF, or others?
A5: Unionchem quotes on FOB Qingdao or CIF destination port as standard, and can discuss other Incoterms depending on order volume and destination.
Q6: How is Drilling Starch API Grade packaged for export?
A6: Standard export packaging is 25 kg net multiply paper bags, shrinkwrapped on pallets. Custom packaging is available for qualified order volumes.
Q7: Is Drilling Starch API Grade suitable for high-temperature wells, or should I look at another grade?
A7: Drilling Starch API Grade is qualified under standard API 13A/ISO 13500 test conditions. For wells with elevated circulating temperature, Unionchem also supplies Drilling Starch HT Grade (/drilling-starch-ht-grade-pd{id}.html), qualified after hot rolling at 140°C for 16 hours — ask your sales contact which grade fits your well conditions.
Tell Unionchem your target order volume, destination port, and application to receive a formal FOB/CIF quotation and free sample.
Request a free sample: sales@unionchem.com.cn
Get a bulk quote: Contact Form
Talk to sales directly: WhatsApp/WeChat +86-13953383796