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P-hydroxybenzoic acid

Chemical name:P-hydroxybenzoic acid

Molecular weight:138.12

Product name:P-hydroxybenzic acid

CAS#：99-96-7

Molecular formula: C₇H₆O₃

Physical and chemical properties:

This product is white powder crystallization, tasteless, odorless, and numb when tasted. It is easily soluble in hot water and alcohol, ether and acetone, slightly soluble in cold water and benzene, and insoluble in carbon disulfide. Dissolved in 125 cold water with a relative density of 1.46.

Use:

This product can be used as a preservative, dye, pharmaceutical and injection molding intermediate, and alcohol esterification. It is also the main raw material of polymer liquid crystal polymer and the raw material of pesticide intermediate.

Technical parameter

项目 Item	指标 Index
项目 Item	聚合级 Polymer Grade	工业级 Industrial Grade
外观 Appearance	白色结晶粉末 White crystalline powder	白色结晶粉末 White crystalline powder
含量(以干基计)Content (dry basis) %	99.6	99
熔点Melting Point °C	214-217	212-216
气味 Odor	无味 Odorless	无味 Odorless
溶解性 Solubility	清澈透明 Clear and transparent	清澈透明 Clear and transparent
干燥失重 Drying Loss %	0.2	0.5
色度(铂-钴) Color (Pt-Co)	10	40
灰分 Ash Content %	0.02	0.15
硫酸盐 (以SO42-计) Sulfate %	0.01	0.05
氯化物(以CI-计)Chloride %	0.005	0.02
苯酚 Phenol %	0.01	0.1
水杨酸Salicylic Acid %	0.02	0.1
4-羟基间苯二甲酸 4-HydroxyisophthalicAcid (HIPA) %	0.05	/
甲醇不溶物 Insoluble in Methanol %	0.005	/
钾 Potassium(K+)%	0.0005	/
钠 Sodium (Na+) %	0.0005	/
铁Iron (Fe) %	0.0005	/
钙+镁(Ca²++Mg²+)%	0.001	/

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