Urea (CAS 57-13-6): Sourcing & QC Notes for Dye
Most Urea (CAS 57-13-6) enquiries in our Dye work come down to the same question: can this batch actually hold up in my process? We rarely answer yes or no straight away — we start from your conditions and work back to the specs. That's the angle on this page.
Basic specifications
| Name | Urea |
|---|---|
| English name | Urea |
| CAS No. | 57-13-6 |
| Formula | CH4N2O |
| Molecular weight | 60.056 g/mol |
| Applications | Dye |
| Standard purity | per batch COA |
| Packaging | confirmed per order |
| Storage | keep sealed in a cool, dry place |
Figures above are published / typical information; final values follow the batch COA and order confirmation.
Key physical data: molecular formula CH4N2O, molecular weight 60.056 g/mol, CAS 57-13-6, melting point 275 °C. These are published physical properties; purity and packaging follow the batch COA and order confirmation.
What it actually does here
Most people's first guess is off — here's why:Industrially, the value of Urea (CAS 57-13-6) is rarely on the spec sheet — it is whether it stably meets your process window. In Dye, its purity, impurity profile and batch consistency usually matter more than a single 'assay' number, because what really moves the finished result is often the ignored impurities and physical properties. Comparable grades:
- Urea Phosphate (CAS 4401-74-5)：a comparable grade often evaluated alongside。
- UREASE：a comparable grade often evaluated alongside。
- Urea Liquor：a comparable grade often evaluated alongside。
- Urea Additive：a comparable grade often evaluated alongside。
- Urean：a comparable grade often evaluated alongside。
- urea hydrochloride (CAS 506-89-8)：a comparable grade often evaluated alongside。
- Urea Hydrobromide (CAS 366-71-2)：a comparable grade often evaluated alongside。
- Urea,N-(3-chlorophenyl)-N'-[5-[2-(thieno[3,2-d]pyrimidin-4-ylamino)ethyl]-2-thiazolyl]- (CAS 1057249-41-8)：a comparable grade often evaluated alongside。
Checks worth running before you order
- The one I weigh most: Define the end use and process window first, then work back to required purity and impurity limits — not the other way around.
- Check compatibility with other materials in the system; run a trial when unsure.
- Match packaging and feeding method to on-site equipment so the material is usable on arrival.
- Retain samples of critical lots and run third-party checks; do not rely on the supplier COA alone.
A few common pitfalls
Comparing price but not impurity profile: same assay with different impurities can yield wildly different results.
Skipping samples and scaling up: going straight to volume most often fails on compatibility.
Ignoring transport and storage: most 'arrived-dead' cases trace back to loose handling.
The ones you'll likely ask
Where is Urea mainly used?
Mostly in Dye-related processes and formulations; the exact use depends on the finished product and process requirements.
How do I judge whether the specification fits?
State the use, process window and critical limits so the supplier can recommend a grade; when unsure, validate with a trial first.
Which quality documents come with Urea?
A COA per batch, with MSDS / technical data sheet and third-party tests available on request; tell us at enquiry if a specific standard must be met.
Worth comparing alongside
- UREASE
- Urea Liquor
- Urea Additive
- Urean
- urea hydrochloride (CAS 506-89-8)
- Urea Hydrobromide (CAS 366-71-2)
See site search for Urea or browse the Organic Chemicals directory.
On supply and paperwork
Jinan Shenghe Chemical Co., Ltd. supplies chemical raw materials and fine chemicals; a COA ships with every batch, with MSDS and technical data sheets available on request. In your enquiry include product name, CAS, target purity and packaging, and we will provide documents and a quote to the relevant standard.
Contact: info@591daili.com | +86-18553102138
Note: This page is for industrial raw-material technical discussion only. Products are supplied for industrial and research use, not for consumer or medical use. Drinking-water, food, cosmetic or pharmaceutical applications must meet applicable regulations and customer standards; specifications, compliance documents and transport requirements follow the batch COA and order confirmation.