Molekula
Starch Soluble (Zulkowsky)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Starch Soluble (Zulkowsky) is a water-soluble form of starch, made soluble by heating with glycerol, that gives thin, low-viscosity solutions and is used chiefly as a laboratory reagent, notably as an indicator in iodometric titrations and as a substrate in amylase assays, as well as a binder or stabilizer in pharmaceutical and industrial applications. It is derived from natural starch sources and is characterized by its high purity and consistent performance. CAS: 9005-84-9, Molecular Formula: (C6H10O5)n, Storage: Ambient, Signal Word: None. Molekula supplies Starch Soluble (Zulkowsky) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Fine white powder |
| pH | 6.5 - 7.5 (2%, aq.) |
| Loss on Drying | ≤ 10.0% (105°C, 2 hours) |
| Sulphated Ash | ≤ 7.0% |
| Total reducing matter | ≤ 1.0% (as maltose) |
| Suitability as enzyme substrate (for amylase) | Passes test |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90034971 |
| CAS Number | 9005-84-9 |
| Molecular Formula | (C6H10O5)n |
| Molecular Weight | N/A |
| SMILES | C(C1C(C(C(C(O1)OC2C(OC(C(C2O)O)O)CO)O)O)O)O |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 35051000 |
| Tariff Code | 3505109000 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is soluble starch (Zulkowsky) commonly used for?
Soluble starch (Zulkowsky) is a laboratory biochemical reagent used chiefly as an indicator in iodometric titrations and as a substrate for amylase assays. It is also used as a stabilizer and adhesive in pharmaceuticals and industrial applications like paper sizing and textile printing.
What is the chemical formula and molecular weight of soluble starch?
The chemical formula is (C₆H₁₀O₅)ₙ, but the exact molecular weight (MW) varies due to its polymeric nature and degree of polymerization.
How should soluble starch be stored?
Store in a cool, dry place at ambient temperature, away from moisture and strong odors, in a tightly sealed container to prevent clumping or degradation.
What grades of soluble starch does Molekula supply?
Molekula supplies food-grade and industrial-grade soluble starch, meeting regulatory standards for safety and performance in their respective applications.
Can Molekula supply soluble starch in bulk quantities?
Yes, we offer bulk packaging options (e.g., 25kg bags, 50kg drums, or larger) for both food and industrial applications—contact us for custom bulk requirements.
What documentation is provided with an order of soluble starch?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation to ensure compliance with food safety (if applicable) and industrial standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.