Chemical Name:4-Hydroxybenzoic acid
Trade Name:p-oxybenzoic acid
Molecular Formula:C7H6O3
Molecular Weight:138.12
CAS No.:99-96-7
Properties:white odorless crystalline powder, easily soluble in hot water and alcohols, aethers and acetone,
slightly soluble in cold water and benzene, insoluble in carbon bisulfide; relative density is 1.46
Use: Can be used as antiseptic, intermediate of dyes, pharmaceuticals; as main material of liquid crystal polymers; as material of pesticide intermediate
Specification
Item Specification
Polymer Grade Technical Grade
Appearance white crystal powder white crystal powder
Purity(on dry base) % 99.6 99.0
Melting Point 214-217 212-216
Odor odorless odorless
Solubility Clear and transparent clear and transparent
Loss on Drying % 0.20 0.50
Color(Pt-Co) 10 40
Ash % 0.02 0.15
Sulfate(SO42-) 0.01 0.05
Chloride(Cl-) % 0.005 0.02
Phe% 0.01 0.10
Salicylic Acid % 0.02 0.10
4-Hydroxyisophthalic Acid(HIPA) ppm 500 /
Insolubles in Metha ppm 50 /
Potassium(K+) ppm 5 /
Sodium (Na+) ppm 5 /
Iron (Fe) ppm 5 /
Ca2++Mg2+ppm 5 /
Formula:KAl(SO4)2 12H2O
Relative Molecular Weight:474.39
CAS NO,: 7784-24-9
EINECS No.:5637-689-7
HS CODE.: 2833301000
Appearance: lump, white crystal, white powder
Properties:Colorless, transparent, particle or crystalline powder, odorless, nontoxic, tastes slightly sweet and puckery, astringent, easily soluble in water, its water solution appears acid,is would lose crystal water and become white powder on heating
Usage;
Food industry: Buffering agents and leavening agents in food-grade products.
Chemical Industry: Water Flocculant, aluminum tanning agents and after-treating agents for leather tanning in the leather industry, dyeing agents,Astringents,mordants etc.
Chemical Properties
Boiling point 40 C
density 0.967 g/mL at 25 C(lit.)
vapor pressure 23 hPa (195 C)
refractive index 1.439
Fp 82 F
storage temp. Flammables area
solubility Miscible with alcohol, isopropyl alcohol and toluene.
form Oily Liquid
Specific Gravity 0.9671
color Light yellow
Item Specifications
Appearance Colorless transparent or light yellow liquid
Purity % 99.99
Aluminum content % 10.2-12.5
Density ( g/cm3) 0.92-0.97
Chemical name:Magnesium nitrate
Molecular formula:Mg(NO3)2.6H2O
Molecular weight:256.40
Property:soluble in water,liquid ammonia, methanol and ethanol.Stable at room temperature, the relative density of 1.461, higher than the melting point of 95�°C off the water to generate alkaline magnesium nitrate, heated to 300�°C begins to decompose above 400�°C to completely decompose into magnesium oxide and Nitrogen oxide gas.
Quality standard:
Item Indicator
Industrial grade Agriculture grade
Magnesium nitrate (Mg(NO3)2.6H2O) â?¥98.0% â?¥98.0%
PH value â?¥4 ---
Heavy metal â?¤0.002 ---
Water insoluble â?¤0.05% â?¤0.1%
Iron â?¤0.001% ---
Magnesium oxide content(CaO) --- â?¥15%
Nitrogen content(N) --- â?¥10.7%
Use:Concentrated nitric acid for industrial de-water agent, manufacture of explosives, catalysts and other magnesium salts and nitrates catalyst raw materials, wheat ashing agent.Used in agriculture, magnesium soluble fertilizer for soilless culture.
Packing:25/50KGlined with plastic bag and exterior is woven bagPacking or according to customers requirements.
1.Purity 98% white granule
2.Used for fertilizer or industrial material
3.Export Asia/Europe
4.ISO9001
Product Feature
Odor: Slight irritative.
Specific Gravity: Unavailable
Solubility: Soluble in water.
Density: 2.19
pH: 6-7
pH Test-Method: PH test paper.
% Volatiles by volume @ 21C (70F): 0
Boiling Point: Not applicable.
Melting Point: >300 C Decomposes.
Vapor Pressure (mm Hg): No information found.
Bulk Density: ~0.9
Evaporation Rate (BuAc=1): No information found.
Application
1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching .
2. bleaching paper pulps , especially mechanical pulps, its the most fittable bleaching agent in pulps.
3. bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products,
4. in mineral, the compound of thiourea and other sulphides.
5. as reducing agent in chemical industry.
6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms.
Packaging 50kg/100kg net in iron drums with double PVC bags
Product Specification/Models
NDEX 90%, 88%, 85%. FOOD ADDITIVE
Na2S2O4, 90%, 88%, 85%, Fe 20ppm ZincZnOther heavy metal
calculated as Pb, 1ppm
Water Insolubles05%
Shelf Life(month)12
