3-Hydroxybenzaldehyde
3-Hydroxybenzaldehyde (CAS: 100-83-4), with the molecular formula HOC6H4CHO and a molar mass of 122.12 g/mol, is a versatile organic compound. It presents as a solid under standard conditions. This chemical serves as a valuable building block in organic synthesis, particularly in the pharmaceutical and fine chemical industries. Its reactive aldehyde and hydroxyl groups make it amenable to a range of chemical transformations.

Pharmaceutical Intermediate
Utilised in the synthesis of active pharmaceutical ingredients (APIs) and complex drug molecules. Its structure allows for the introduction of specific functional groups required in medicinal chemistry.
Organic Synthesis Building Block
Serves as a key starting material or intermediate in the construction of various organic compounds. It is frequently employed in research and development for novel material discovery.
Agrochemical Synthesis
Contributes to the development of new pesticides, herbicides, and other crop protection agents. Its chemical structure can be modified to enhance biological activity.
Flavour and Fragrance Precursor
Can be chemically modified to produce compounds used in the flavour and fragrance industries, owing to its aromatic aldehyde structure.
| Molecular weight | 122.12 |
|---|---|
| Linear formula | HOC6H4CHO |
| Assay | 97% |
| Boiling point | 191 °C/50 mmHg(lit.) |
| Melting point | 100-103 °C(lit.) |

Hazard statements
- 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) | Xi |
| Risk statements (R) | 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 3-Hydroxybenzaldehyde used for?
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3-Hydroxybenzaldehyde is primarily used as a building block in organic synthesis, particularly for the creation of pharmaceutical intermediates, agrochemicals, and potentially in the flavour and fragrance industries. It is also a useful reagent in general chemical synthesis and research.
What are the CAS number and molecular formula for 3-Hydroxybenzaldehyde?
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The CAS number for 3-Hydroxybenzaldehyde is 100-83-4, and its molecular formula is HOC6H4CHO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Hydroxybenzaldehyde with an assay of 97%. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
How should 3-Hydroxybenzaldehyde be handled safely?
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3-Hydroxybenzaldehyde is classified with GHS07 symbol and a 'Warning' signal word. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves, should be used. Ensure adequate ventilation. Refer to the Safety Data Sheet (SDS) for comprehensive handling procedures.
Is 3-Hydroxybenzaldehyde a controlled substance?
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Based on the provided data, there is no indication that 3-Hydroxybenzaldehyde is a controlled substance.
How is 3-Hydroxybenzaldehyde packed and shipped?
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3-Hydroxybenzaldehyde is exported by Tech Serve Solutions in compliance with all relevant chemical shipping regulations. Packaging is designed to ensure product integrity and safety during transit.
How can I request a quote or sample for 3-Hydroxybenzaldehyde?
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To request a quote or sample for 3-Hydroxybenzaldehyde, please contact our sales team through the website or direct inquiry channels, providing your specific requirements.
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