Acid Brown 4

Acid Brown 4

4-Hydroxybenzoic acid

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 /

UV-284 RAW MATERIAL FOR ATTITUDE WHITENING FACE WASH - PERSONAL CARE PRODUCT BP-4 Benzophenone-4


Specifications:
Items Specification
Appearance Off-white or light yellow crystalline
Specific extinction E285:460min
UV absorbance E325:290min
Content 99.0% min
PH value 1.2-2.2
Melting point 140â?? min
Loss on drying 3.0% max
Turbidity in water 4.0 EBC max
Heavy metals 5ppm max
Gardner color 2.0 max

D-calcium pantothenate is a white powder, no smelly odor, tastes a little bitter, has hydroscopic property. Its aqueous solution shows neutrality or slightly alkaline, easy to dissolve in water, slightly solvable in ethanol, almost can not dissolve in chloroform or aether.
Item Index
Authentication Positive reaction
Calcium content ,(Ca) %(weight on dry product) 8.2-8.6
Nitrogen content ,(N)%(weight on dry product) 5.7-6.0
specific optical rotation, ([a]D20)%(weight on dry product) +25�°-+27.5�°
Heavy metal (count on Pb),% â?¤0.002
Loss on drying,% â?¤5.0
Uses:feed additive, food additive, pharmaceutical USP28/BP2003
Packing:25kg/Carton, 25kg/drum
Storage:store in cool,shady and dry place.
Period of validity:3 years, use it as quickly as possible after unseal

Appearance:
White Powder

Solubility:
It is soluble in ester, ketone, aromatics and alcohol ethers. It is insoluble in 200# gasoline and alcohol.

Characters:
1, Good adhesion and High hardness;
2, Good compatibility with CAB or NC;
3, Non yellowing and good resistance to weather;
4, Good compatibility with other resins;
5, Good adhesion with plastic substrate;

Specification:

TYPE NO.: AR-001 AR-002 AR-66 AR-70 AR-800
( ALCOHOL SOLUBLE )
Solid Content (%) 100 100 100 100 100
Softening Point (�ºC) 115----130 115----128 130----150 150----160 108
Acid Value (mgKOH/g) 18----35 18----35 3----6 5----8 4.29
Tg (�ºC) 45 40 50 61 39.69
Viscosity (25�ºC mpa.S)
250--450 250--450 2000--4000 250--0450 100--200
Application:
AR--001 Exterior wall coating, fire retardant coatings
AR--002 Road marking paint, floor coatings
AR--66 Inks, Plastic coatings, container coatings
AR--70 Plastic coatings, PVC Inks
AR--800 Ink, plastic coatings, environment--friendly coatings

Packing: 25kgs net per bag, 12500kgs/1x20`gp with pallet.

Storage: Should be stored in dry, aeration area, avoiding the wet. The valid store period is two years.

Density: 1.2±0.1 g/cm3
Boiling Point: 306.0±17.0 °C at 760 mmHg
Melting Point: 84-86 °C(lit.)
Molecular Weight 166.174
Flash Pointï¼? 124.3±14.4 °C
Index of Refractionï¼?1.538
shelf life: 2 years
storage: cool and dry
delivery: within 7-15days
HS Code: 29189090

Name: 2-hydroxy-6-naphthoic acid
Alias: 2,6 acid; 2-naphthol-6-carboxylic acid; 6-hydroxy-2-naphthoic acid; 6-hydroxy-2-naphthoic acid
CAS NOï¼?16712-64-4
Molecular formula: c11h7o3
Molecular weight: 187.172

Product quality standard:
Appearance characte Light yellow powder
Content 99%
2-naphtholâ?¤0.10%
2,3-acidâ?¤0.10%
melting point243-245�°C
Loss on dryingâ?¤0.30%
heavy metalâ?¤20ppm

Application: used in medicine, liquid crystal, paint, etc.

Packing: 25kg / cardboard barrel, or according to customer requirements

Commodity: Sodium Hydrosulfite
Other name: Synonyms: Sodium Hydrosulphite; Sodium Dithionite; Dithionous acid, Disodium salt; Sodium Sulfoxylate
CAS No.: 7775-14-6
Molecular Weight: 174.10
Chemical Formula: Na2S2O4

Product Description
Appearance: White, crystalline powder.

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

4-Hydroxybenzoic Acid