Molekula
4-Chloro-1-naphthol
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
4-Chloro-1-naphthol is an aromatic organic compound widely used as a chromogenic horseradish peroxidase (HRP) substrate in Western blotting, dot blots and immunohistochemistry, where it forms an insoluble blue-purple precipitate, as well as a reagent in biochemical assays and a precursor in pharmaceutical manufacturing. It appears as a pale yellow to white crystalline powder with a faint phenolic odor. This chemical has a CAS number of 604-44-4, a molecular formula of ClC10H6OH, and a molecular weight of 178.61 g/mol. Store it at -15 to -20°C to maintain stability. It carries a signal word of "Warning" for safety classification. Molekula supplies 4-Chloro-1-naphthol 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.
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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 | Off-White to Tan |
| Identification | Conforms to reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Vapour Pressure | 0.0001 mmHg |
Source: PubChem CID 11787 (Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 90034545 |
| CAS Number | 604-44-4 |
| IUPAC Name | 4-chloronaphthalen-1-ol |
| Molecular Formula | ClC10H6OH |
| Molecular Weight | 178.61 |
| Exact Mass | 178.0185 |
| SMILES | C1=CC=C2C(=C1)C(=CC=C2Cl)O |
| InChIKey | LVSPDZAGCBEQAV-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H7ClO/c11-9-5-6-10(12)8-4-2-1-3-7(8)9/h1-6,12H |
| PubChem CID | 11787 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29081960 |
| Tariff Code | 2908190090 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
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
- 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, English (US), 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
- 1-Chloro-4-hydroxynaphthalene
- 1-Naphthalenol, 4-chloro-
- 1-Naphthol, 4-chloro-
- 4-Chloro-.alpha.-naphthol
- 4-Chloro-1-hydroxynaphthalene
- 4-chloro-1-naphthalenol
- 4-Chloro-1-naphthol, tablet
- 4-chloronaphthalen-1-ol
- 4-chloronaphthol
- 4-CN
Frequently asked questions
What is 4-Chloro-1-naphthol commonly used for?
4-Chloro-1-naphthol is primarily used as a precipitating chromogenic substrate for horseradish peroxidase (HRP) in immunoblotting, including Western blots and dot blots, and in immunohistochemistry, where it forms an insoluble blue-purple product at sites of peroxidase activity.
What is the molecular formula and molecular weight of 4-Chloro-1-naphthol?
The molecular formula is C₁₀H₇ClO (ClC₁₀H₆OH) with a molecular weight of 178.61 g/mol.
How should 4-Chloro-1-naphthol be stored?
Store at -15 to -20°C in a cool, dry place, away from incompatible substances and moisture.
What grade or purity is available for 4-Chloro-1-naphthol?
Molekula supplies analytical grade and technical grade 4-Chloro-1-naphthol; purity varies by grade (typically ≥98% for analytical).
Can Molekula supply 4-Chloro-1-naphthol in bulk quantities?
Yes, bulk quantities are available upon request, with minimum order quantities and packaging options tailored to your needs.
What documentation comes with an order of 4-Chloro-1-naphthol?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), 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.