Orcinol monohydrate
Orcinol monohydrate (CAS: 6153-39-5), with the molecular formula CH3C6H3-1,3-(OH)2 · H2O and a molecular weight of 142.15, is a chemical compound with significant utility. It serves as a valuable building block in organic synthesis and is employed in the development of various chemical products. Its applications span across chemical research and industrial processes requiring a reliable source of this dihydroxytoluene derivative. Tech Serve Solutions supplies Orcinol monohydrate with an assay of ≥96.0% (GC).
- IUPAC
- 3,5-Dihydroxytoluene,5-Methylresorcinol
- Synonyms
- 3,5-Dihydroxytoluene monohydrate5-Methylresorcinol monohydrate

Organic Synthesis Intermediate
Orcinol monohydrate is a versatile building block utilised in the synthesis of complex organic molecules. Its reactive hydroxyl groups and aromatic ring structure make it suitable for various derivatisation reactions in chemical research and development.
Dye and Pigment Precursor
This compound can act as a precursor in the manufacture of certain dyes and pigments. Its chemical structure lends itself to chromophore development, contributing to colourant properties.
Reagent in Analytical Chemistry
Orcinol monohydrate finds application as a reagent in specific analytical procedures, particularly in colorimetric assays. Its ability to form coloured complexes under certain conditions aids in quantitative analysis.
| Molecular weight | 142.15 |
|---|---|
| Linear formula | CH3C6H3-1,3-(OH)2 · H2O |
| Assay | ≥96.0% (GC) |
| Boiling point | 290 °C(lit.) |
| Melting point | 56-58 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Orcinol monohydrate used for?
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Orcinol monohydrate is primarily used as a building block in organic synthesis, a precursor for dyes and pigments, and a reagent in analytical chemistry.
What are the CAS number and formula for Orcinol monohydrate?
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The CAS number for Orcinol monohydrate is 6153-39-5, and its linear formula is CH3C6H3-1,3-(OH)2 · H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Orcinol monohydrate with an assay of ≥96.0% (GC). We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
What are the safety considerations for handling Orcinol monohydrate?
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Orcinol monohydrate is classified with GHS07 and carries a Warning signal word. It is harmful if swallowed (H302), causes skin irritation (H315), causes serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask type N95, eyeshields, and gloves, should be used. Handle in a well-ventilated area.
How is Orcinol monohydrate packed, shipped, and exported?
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Orcinol monohydrate is carefully packed to ensure its integrity during transit. Tech Serve Solutions has extensive experience in shipping and exporting chemicals globally, adhering to all relevant regulations.
How can I request a sample or quote for Orcinol monohydrate?
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To request a sample or a quote for Orcinol monohydrate, please contact our sales team through the website or call us directly. Our team will be happy to assist you with your inquiry.
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