2-hydroxy-benzaldehyd
Salicylaldehyde
CAS: 90-02-8
Molecular Formula: C7H6O2
2-hydroxy-benzaldehyd - Names and Identifiers
| Name | Salicylaldehyde |
| Synonyms | o-Formylphenol 2-Formylphenol salicyaldehyde Salicylaldehyde 2-hydroxy-benzaldehyd o-hydroxy-benzaldehyd 2-Hydroxybenzaldehyde Benzaldehyde,2-hydroxy- Benzaldehyde, o-hydroxy- 2-Hydroxy Benzaldehyde (Salicylaldehyde) o-hydroxybenzaldehyde,o-formylphenol,2-formylphenol.sah,salicylal |
| CAS | 90-02-8 |
| EINECS | 201-961-0 |
| InChI | InChI=1/C7H6O2/c8-5-6-3-1-2-4-7(6)9/h1-5,9H |
| InChIKey | SMQUZDBALVYZAC-UHFFFAOYSA-N |
2-hydroxy-benzaldehyd - Physico-chemical Properties
| Molecular Formula | C7H6O2 |
| Molar Mass | 122.12 |
| Density | 1.146 g/mL at 25 °C (lit.) |
| Melting Point | 1-2 °C (lit.) |
| Boling Point | 197 °C (lit.) |
| Flash Point | 170°F |
| JECFA Number | 897 |
| Water Solubility | slightly soluble |
| Solubility | 4.9g/l |
| Vapor Presure | 1 mm Hg ( 33 °C) |
| Vapor Density | 4.2 (vs air) |
| Appearance | Liquid |
| Color | Clear yellow |
| Odor | Bitter almonds |
| Exposure Limit | ACGIH: TWA 5 ppm (Skin)OSHA: TWA 5 ppm(19 mg/m3)NIOSH: IDLH 250 ppm; TWA 5 ppm(19 mg/m3); Ceiling 15.6 ppm(60 mg/m3) |
| Merck | 14,8326 |
| BRN | 471388 |
| pKa | 8.37(at 25℃) |
| PH | 6-8 (H2O, 20℃)Not applicable |
| Storage Condition | -20°C |
| Stability | Stable. Combustible. Incompatible with strong bases, strong reducing agents, strong acids, strong oxidizing agents. |
| Sensitive | Air & Light Sensitive |
| Refractive Index | n20/D 1.573(lit.) |
| Physical and Chemical Properties | Colorless, clear, oily liquid, with scorching odor and almond odor; Vapor pressure:.13kPa/33 ℃; Flash point: 76 ℃; Melting point -7 ℃; Boiling point 197 ℃; Solubility slightly soluble in water, soluble in ethanol, ether; Density: Relative density (water = 1)1.17; stability: Stable |
| Use | Main uses: used as analytical reagents, spices, gasoline additives and for organic synthesis |
2-hydroxy-benzaldehyd - Risk and Safety
| Risk Codes | R21/22 - Harmful in contact with skin and if swallowed. R36/38 - Irritating to eyes and skin. R68 - Possible risk of irreversible effects R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R51 - Toxic to aquatic organisms R36 - Irritating to the eyes R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R22 - Harmful if swallowed |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S36 - Wear suitable protective clothing. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S64 - S29/35 - |
| UN IDs | 3082 |
| WGK Germany | 2 |
| RTECS | VN5250000 |
| FLUKA BRAND F CODES | 8-10-23 |
| TSCA | Yes |
| HS Code | 29122990 |
| Hazard Class | 6.1(b) |
| Packing Group | II |
| Toxicity | MLD in rats (mg/kg): 900-1000 s.c. (Binet) |
2-hydroxy-benzaldehyd - Upstream Downstream Industry
| Raw Materials | Salicylic acid |
| Downstream Products | 2,3-Benzofuran Coumarin |
2-hydroxy-benzaldehyd - Nature
Open Data Verified Data
colorless or light brown transparent oily liquid with bitter almond flavor. Not volatile, slightly soluble in water (11 7G] log water), soluble in ethanol, ether and benzene. Orange in sulfuric acid.
Last Update：2025-06-10 22:55:16
2-hydroxy-benzaldehyd - Preparation Method
Open Data Verified Data
phenol and excess sodium hydroxide were mixed to form sodium phenolate solution, heated to 60~65 ℃, chloroform was slowly added, the reaction was initially purple, gradually turned to orange red, after the reaction was completed, the excess chloroform is distilled off with water vapor, and the generated salicylaldehyde sodium salt is neutralized by acid, and then the Salicylaldehyde is distilled off with water vapor.
Last Update：2025-06-10 22:55:16
2-hydroxy-benzaldehyd - Application
Open Data Verified Data
salicylaldehyde has a good bactericidal effect and is used as a bactericide in industrial circulating cooling water and oilfield reinjection water treatment. It is used as a preservative in oil flavor. When the concentration of 50mg/L, can kill 60% of the iron bacteria. 85% of the sulfate reducing bacteria. The general dosage for water treatment is 50 ~ lOOmg/L. The use concentration should be in its water soluble range, can be directly added.
Last Update：2025-08-19 16:24:40
2-hydroxy-benzaldehyd - Safety
Open Data Verified Data
rats were subcutaneously injected with MLD: 900 ~ 1000mg/kg. Contact with salicylaldehyde can cause severe burns, salicylaldehyde can strongly irritate the eyes and cause pain and damage to the cornea. Staff should be protected, if contact to the skin, eyes, should be quickly washed with a large amount of water. Store in a cool, ventilated warehouse.
Last Update：2022-01-01 09:29:45
2-hydroxy-benzaldehyd - Reference Information
| FEMA | 3004 | SALICYLALDEHYDE |
| LogP | 1.66 at 25℃ and pH6.2-6.3 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | Salicylaldehyde is a light yellow oily clear liquid, melting point -7 ℃, boiling point 197 ℃, there is a burning smell and almond odor. Slightly soluble in water, soluble in ethanol, ether. |
| properties | Salicylaldehyde is a colorless, clear, oily liquid with a scorching odor and almond odor. Melting point (℃):1~2 Relative density (water = 1):1.17 boiling point (℃):197 flash point (℃):76 solubility: slightly soluble in water, soluble in ethanol, ether |
| Use | Salicylaldehyde is a kind of perfume and an intermediate in organic synthesis with a wide range of uses. In the synthesis of drugs are often used in the synthesis of Salinazid, Benzbromarone (Benzbromarone) and acetamide phenoxone. GB 2760-1996 provides for the permitted use of flavorants. Mainly used in the preparation of cinnamon and nuts flavor. organic synthetic raw materials, used in the manufacture of coumarins and the preparation of violet and other flavors, also used as pesticides used as analytical reagents, also used in organic synthesis Main uses: used as analytical reagents, fragrance, gasoline additives and used in organic synthesis This product is a fragrance and other intermediates in organic synthesis. China's GB 2760-86 for the permitted use of edible spices, mainly for the preparation of cinnamon and nut flavor. assay of hydrazine. Photometric determination of scandium. Extraction separation of nickel from cobalt. The malodor and organic synthesis of nickel, copper, and fusel alcohols and ketones were examined. Spices. |
| Application | Salicylaldehyde is an aldehyde organic compound, which can be used as an intermediate in organic synthesis for the synthesis of medicines, dyes and fragrances. |
| toxicity | GRAS(FEMA). |
| usage limit | FEMA(mg/kg): soft drinks 0.55; Cold drinks 1.1; Candy 1.8; Baked goods 6.3; gum 11~18; Wine 5.0; Condiment 20. Moderate limits (FDA § 172.515,2000). |
| production method | from the reaction of phenol and chloroform in sodium hydroxide solution. The improved method is to use O-cresol as raw material, phosgenation, chlorination after hydrolysis, that is to obtain salicylaldehyde. obtained by the reaction of phenol and chloroform in the presence of caustic solution. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 520 mg/kg; Intraperitoneal-mouse LD50:231 mg/kg |
| stimulation data | Skin-rabbit 500 mg/24 h moderate |
| flammability hazard characteristics | open flame, high heat, flammable oxidant; Combustion-induced smoke |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| extinguishing agent | dry powder, foam, carbon dioxide, sand |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 15:16:53
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Raw Materials for 2-hydroxy-benzaldehyd
Downstream Products for 2-hydroxy-benzaldehyd