Molekula
Diphenhydramine hydrochloride
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
Diphenhydramine hydrochloride is a first-generation antihistamine used to treat allergic reactions, hay fever, and symptoms of the common cold. It also has sedative and antiemetic properties. Available in powder form, it has a CAS number of 147-24-0, a molecular formula of C17H21NO·HCl, and a molecular weight of 291.82 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies Diphenhydramine hydrochloride 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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100 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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 | White or almost white crystalline powder |
| Melting Point | 167℃ - 172 ℃ |
| Identification | Conforms to reference |
| Loss on Drying | ≤0.5% |
| Storage Temperature | +20℃ |
| Specification | Conforms to reference |
| Assay | ≥98% |
| Residue on Ignition | ≤0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 26372474 |
| CAS Number | 147-24-0 |
| IUPAC Name | 2-benzhydryloxy-N,N-dimethylethanamine;hydrochloride |
| EC Number | 205-687-2 |
| Molecular Formula | C17H21NO·HCl |
| Molecular Weight | 291.82 |
| Exact Mass | 291.139 |
| SMILES | CN(C)CCOC(C1=CC=CC=C1)C2=CC=CC=C2.Cl |
| InChIKey | PCHPORCSPXIHLZ-UHFFFAOYSA-N |
| InChI | InChI=1S/C17H21NO.ClH/c1-18(2)13-14-19-17(15-9-5-3-6-10-15)16-11-7-4-8-12-16;/h3-12,17H,13-14H2,1-2H3;1H |
| PubChem CID | 8980 |
| REACH Code | Y110 |
| HTS Code | 29221996 |
| Tariff Code | 2922190090 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H336 May cause drowsiness or dizziness
- H361d Suspected of damaging fertility. Suspected of damaging the unborn child.
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- Allergival
- Antitussive
- Bendylate
- Denydryl
- Dibenil
- Diphenhydramine HCl
- Eldadryl
- Fenylhist
- Hydramine
- Silphen
Frequently asked questions
What is Diphenhydramine hydrochloride used for?
It is primarily used as an antihistamine for treating allergies, hay fever, and symptoms of the common cold. It is also used in some formulations for sleep aid and motion sickness.
What is the chemical formula and molecular weight of Diphenhydramine hydrochloride?
The formula is C17H21NO·HCl and the molecular weight is 291.82 g/mol.
How should Diphenhydramine hydrochloride be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for Diphenhydramine hydrochloride?
Available in pharmaceutical grade for research and industrial use.
Can Molekula supply Diphenhydramine hydrochloride in bulk?
Yes, Molekula can supply Diphenhydramine hydrochloride in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with an order of Diphenhydramine hydrochloride?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
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.