Molekula
Guaifenesin
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
Guaifenesin is an expectorant used primarily in cough medications to help thin and loosen mucus in the respiratory tract, making it easier to cough up. It is also used as a muscle relaxant in veterinary medicine. This chemical has a CAS number of 93-14-1, with the molecular formula C10H14O4 and a molecular weight of 198.22. It should be stored at ambient conditions. The signal word for safety classification is Warning. Molekula supplies Guaifenesin 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
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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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 | White crystalline powder |
| Identification | UV: Concordant with the RS spectrum. |
| Loss on Drying | ≤0.5% |
| Total Impurities | ≤1.0% |
| Organic impurities | ≤1.5% |
| Residual Solvents: Ethanol | ≤0.5% |
| Assay (dried basis) | 98.0 - 102.0% |
| Any Unidentified Impurity | ≤1.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White to slightly gray, crystalline powder |
| Odour | Slight characteristic odor |
| Melting Point | 78.5-79 °C |
| Boiling Point | 215 °C at 1.90E+01 mm Hg |
| log P (octanol/water) | 1.39 |
Source: PubChem CID 3516 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 44749496 |
| CAS Number | 93-14-1 |
| IUPAC Name | 3-(2-methoxyphenoxy)propane-1,2-diol |
| EC Number | 202-222-5 |
| Molecular Formula | C10H14O4 |
| Molecular Weight | 198.22 |
| Exact Mass | 198.0892 |
| SMILES | COC1=CC=CC=C1OCC(CO)O |
| InChIKey | HSRJKNPTNIJEKV-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H14O4/c1-13-9-4-2-3-5-10(9)14-7-8(12)6-11/h2-5,8,11-12H,6-7H2,1H3 |
| PubChem CID | 3516 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2909.49.05.00 |
| Tariff Code | 2909498090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
- 3-(2-methoxyphenoxy)propane-1,2-diol
- Aeronesin
- Glycerol guaiacolate
- GLYCERYL GUAIACOLATE
- Guaiacol glyceryl ether
- Guaiphenesin
- Guaiphenesine
- Hustosil
- Methphenoxydiol
- Mucinex
Frequently asked questions
What is guaifenesin commonly used for?
Guaifenesin is primarily used as an expectorant to help thin and loosen mucus in the lungs, making it easier to cough up phlegm.
What is the chemical formula and molecular weight of guaifenesin?
The chemical formula is **C₁₀H₁₄O₄**, and the molecular weight is **198.22 g/mol**.
How should guaifenesin be stored?
Store guaifenesin at **ambient temperature** in a cool, dry place, away from direct sunlight and incompatible substances.
What grades or purity levels of guaifenesin does Molekula supply?
Molekula supplies **pharmaceutical-grade (USP/EP/BP)** and **analytical-grade** guaifenesin, depending on customer requirements.
Can Molekula supply guaifenesin in bulk quantities?
Yes, Molekula can supply guaifenesin in **bulk quantities** (from kilograms to metric tons), subject to availability and order specifications.
What documentation comes with a guaifenesin order?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and **batch-specific documentation** for traceability.
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.