1,3-propylene sulfite (CAS 4176-55-0): Sourcing & QC Notes from a Inorganic Chemicals Perspective
When people talk about Inorganic Chemicals, 1,3-propylene sulfite (CAS 4176-55-0) comes up almost every time. In our sourcing and QC work the question is rarely “what’s the assay” — it’s “how do I actually use it in my system”. This page walks through that from a practical angle.
Basic specifications
| Name | 1,3-propylene sulfite |
|---|---|
| English name | 1,3-propylene sulfite |
| CAS No. | 4176-55-0 |
| Formula | C3H6O3S |
| Molecular weight | 122.15 |
| Applications | Inorganic Chemicals |
| 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.
What it does in the system
Industrially, the value of 1,3-propylene sulfite (CAS 4176-55-0) is rarely on the spec sheet — it is whether it stably meets your process window. In Inorganic Chemicals, 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:
- 1 3 Propylene Sulfite 4176 55 0/?lang=en：a comparable grade often evaluated alongside。
- 1,3-丁二醇：a comparable grade often evaluated alongside。
- 1,3-DICHLORO-2,2-DIMETHYLPROPANE：a comparable grade often evaluated alongside。
Sourcing & incoming-inspection points
- 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.
A few things people ask
Where is 1,3-propylene sulfite mainly used?
Mostly in Inorganic Chemicals-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 1,3-propylene sulfite?
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.
Further reading
- 1,3-丁二醇
- 1,3-DICHLORO-2,2-DIMETHYLPROPANE
- 1,3-Dihydro-3,5,7-trimethyl-1-[2-(2,2,4-trimethyl-1-pyrrolidinyl)ethyl]-2H-azepin-2-one
- 1,3-dimethylisoquinoline
- 1,3,5-Cycloheptatriene, 1-methoxy-
- 1,3-Bis[4-(trifluoromethyl)phenyl]thiourea
See site search for 1 3 propylene sulfite or browse the Organic Chemicals directory.
Supply & quality files
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.