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Salicylaldehyde structure
Chemical Name:
FEMA 3004;Salicylal;2-FORMYLPHENOL;o-Formylphenol;salicyaldehyde;salicyladehyde;SALICYLALDEHYD;SALICYLALDEHYDE;SALICYLIALDENYDE;AKOS BBS-00003186
Molecular Formula:
Formula Weight:
MOL File:

Salicylaldehyde Properties

Melting point:
1-2 °C(lit.)
Boiling point:
197 °C(lit.)
1.146 g/mL at 25 °C(lit.)
vapor density 
4.2 (vs air)
vapor pressure 
1 mm Hg ( 33 °C)
refractive index 
n20/D 1.573(lit.)
Flash point:
170 °F
storage temp. 
Store below +30°C.
8.37(at 25℃)
Clear yellow
6-8 (H2O, 20℃)Not applicable
Water Solubility 
slightly soluble
Air & Light Sensitive
JECFA Number
Stable. Combustible. Incompatible with strong bases, strong reducing agents, strong acids, strong oxidizing agents.
CAS DataBase Reference
90-02-8(CAS DataBase Reference)
NIST Chemistry Reference
Benzaldehyde, 2-hydroxy-(90-02-8)
EPA Substance Registry System
Benzaldehyde, 2-hydroxy-(90-02-8)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  Xn,N
Risk Statements  21/22-36/38-68-36/37/38-20/21/22-51-36-51/53-22
Safety Statements  26-36/37-36/37/39-36-61-64-29/35
RIDADR  3082
WGK Germany  2
RTECS  VN5250000
HazardClass  6.1(b)
PackingGroup  II
HS Code  29122990
Hazardous Substances Data 90-02-8(Hazardous Substances Data)
Toxicity MLD in rats (mg/kg): 900-1000 s.c. (Binet)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H227 Combustible liquid Flammable liquids Category 4 Warning P210, P280, P370+P378, P403+P235,P501
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:
P201 Obtain special instructions before use.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P391 Collect spillage. Hazardous to the aquatic environment
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P405 Store locked up.
P501 Dispose of contents/container to..…

NFPA 704

Diamond Hazard Value Description
Flammability   2 Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur and multiple finely divided suspended solids that do not require heating before ignition can occur. Flash point between 37.8 and 93.3 °C (100 and 200 °F). (e.g. diesel fuel, sulfur)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)

(NFPA, 2010)

Salicylaldehyde price More Price(19)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 03273 Salicylaldehyde analytical standard 90-02-8 1ml-f $21.9 2018-11-13 Buy
Sigma-Aldrich 03273 Salicylaldehyde analytical standard 90-02-8 5ml-f $84.4 2018-11-13 Buy
TCI Chemical S0004 Salicylaldehyde >98.0%(GC) 90-02-8 25g $14 2018-11-22 Buy
TCI Chemical S0004 Salicylaldehyde >98.0%(GC) 90-02-8 100g $30 2018-11-22 Buy
Alfa Aesar A13833 Salicylaldehyde, 99% 90-02-8 500g $58 2018-11-13 Buy

Salicylaldehyde Chemical Properties,Uses,Production


Salicylaldehyde (2-hydroxybenzaldehyde) is an organic compound with the formula C6H4CHO-2-OH. Along with 3-hydroxybenzaldehyde and 4-hydroxybenzaldehyde, it is one of the three isomers of hydroxybenzaldehyde. It is a colorless or pale yellow liquid with a bitter almond odor and a burning taste. It is soluble in alcohol, benzene, and ether, and very slightly soluble in water. Salicylaldehyde is found in shrubs of the genus Spiraea and is usually produced from phenol by the action of chloroform in the presence of an alkali base. It is used in the production of coumarin, saligenin, and salicylaldoxime (an important analytical reagent), and also in analytical chemistry—for example, to detect hydrazine. Besides, salicylaldehyde is a key precursor to various chelating agents and a flavouring ingredient.

Chemical Properties

colourless to yellow oily liquid with a bitter almond odour

Chemical Properties

Salicylaldehyde has a pungent, irritating, bitter, almond-like odor similar to benzaldehyde, acetophenone and nitrobenzene, but with phenolic notes. It has a nut-like, coumarin flavor at low levels.


Occurs frequently in nature; in the flowers of Spirea ulmaria and other Spireae, in the roots of Crepis foetida L., in the fruits of Pinus avium, in the rind of Rauqolfia caffra, in the leaves of Ceanothus velutinus and in the essential oil of Cinnamomum cassia and of tobacco leaves. Also reported found in grapes, tomato, baked potato, cinnamon bark, cassia leaf, peppermint oil, pennyroyal oil, parmesan cheese, butter, milk powder, roasted chicken, beer, rum, Japanese whiskey, sherry, coffee, tea, soybean, mushroom, buckwheat, Bourbon vanilla, Chinese quince, Muscat grape, vanilla and mastic gum oil.


In perfumery.


ChEBI: A hydroxybenzaldehyde carrying a hydroxy substituent at position 2.


From phenol, chloroform and alkali according to Reimer–Tiemann method (1876); starting material for the manufacture of coumarin.

Aroma threshold values

Detection: 30 ppb

Taste threshold values

Taste characteristics at 20 ppm: spicy, medicinal and astringent

General Description

Liquid; colorless or pale yellow; bitter almond odor. Sinks and mixes slowly in water.

Reactivity Profile

Salicylaldehyde is an aldehyde. Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation.

Health Hazard

LIQUID: Irritating to skin and eyes. Harmful if swallowed.

Health Hazard

Salicylaldehyde is a skin irritant; 500 mg/daycaused moderate irritation to rabbit skin. Itcan have injurious effects on fertility. Studieson rats indicate that subcutaneous administrationof salicylaldehyde in a high doseof >400 mg/kg can produce developmentalabnormalities, fetal death, and postimplantationmortality.
The toxicity of this compound, however,is low. No toxic symptoms were noted.
LD50 value, oral (rats): 520 mg/kg
LD50 value, skin (rats): 600 mg/kg.

Fire Hazard

Combustible. Can react with oxidizing materials.

Purification Methods

It is precipitated as the bisulfite addition compound by pouring the aldehyde slowly and with stirring into a 25% solution of NaHSO3 in 30% EtOH, then standing for 30minutes. The precipitate, after filtering at the pump, and washing with EtOH, is decomposed with aqueous 10% NaHCO3, and the aldehyde is extracted into diethyl ether, dried with Na2SO4 or MgSO4, and distilled, under reduced pressure. Alternatively, salicylaldehyde is precipitated as its Cu complex by adding it to warm, saturated aqueous Cu(OAc)2, shaking and standing in ice. The precipitate is filtered off, washed with EtOH, then Et2O, and decomposed with 10% H2SO4; the aldehyde is extracted into Et2O, dried and vacuum distilled. It was also purified by dry column chromatography on Kieselgel G [Nishiya et al. J Am Chem Soc 108 3880 1986]. The acetyl derivative has m 38-39o (from pet ether or EtOH) and b 142o/18mm, 253o/atm. [Beilstein 8 IV 176.] The oxime, [94-67-7] M 137.1, crystallises CHCl3/pet ether (b 40-60o) with m 57o [Beilstein 8 IV 203.]

Waste Disposal

Salicylaldehyde is burned in a chemicalincinerator equipped with an afterburner andscrubber.


Salicylaldehyde Preparation Products And Raw materials

Raw materials

Preparation Products

Salicylaldehyde Suppliers

Global( 318)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Jinan Finer Chemical Co., Ltd
+86-531-88989539 CHINA 943 58
Shenzhen Sendi Biotechnology Co.Ltd.
0755-23311925 18102838259
0755-23311925 CHINA 3203 55
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21935 58
Dalian Richfortune Chemicals Co., Ltd
86-411-84820922, 84821539
86-411-84821380 China 360 57
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20676 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32452 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1815 55
career henan chemical co
+86-371-86658258 CHINA 25796 58
13867897135 CHINA 925 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 23958 58

View Lastest Price from Salicylaldehyde manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-04-02 Salicylaldehyde
US $0.00 / KG 1KG 99% 500mt Jinan Finer Chemical Co., Ltd
2018-12-24 Salicylaldehyde
US $1.00 / KG 1KG 98% 100KG career henan chemical co

Salicylaldehyde Spectrum

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