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Cas No139-85-5 3,4-Dihydroxybenzaldehyde

Supplier From China
Jul-16-15

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ProName: China factory 3,4-Dihydroxybenzaldehyd...CasNo: 139-85-5Appearance: Yellow PowderApplication: used in organic synthesis. a kind of P...DeliveryTime: 2 days once order confirmedPackAge: bag or 25/kg per drumPort: Ningbo, ChinaProductionCapacity: 1000 Kilogram/MonthPurity: HPLC 98%min;99%minStorage: Room TemperatureTransportation: Room TemperatureLimitNum: 1 KilogramMoisture Content: <0.5%Impurity: <2.0%Product Name: 3 4-DihydroxybenzaldehydeCAS No: 139-85-5Appearance: Yellow PowderMF: C7H6O3Purity: 98%min or 99%minAppilication: Pharmaceutical intermediates;flavor in...other name: ProtocatechualdehydeBrand name: JHKJProduct Code: JHI005Product Capacity: 2ton per monthStock quantity: 300KG always

just as customer required

Price and Minimum Quantity

Price: $75 - $100
MOQ: Not Specified

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L-Arginine Specification
Item Specifications (USP) Specifications (AJI)
Description White crystals or crystalline powder White crystals or crystalline powder
Identification Infrared absorption spectrum Infrared absorption spectrum
Specific rotation[a]D20 +26.3 - +27.7 +26.9 - +27.9
State of solution/Transmittance 98.0%
Chloride (Cl) 0.05% 0.020%
Ammonium (NH4) 0.02%
Sulfate (SO4) 0.03% 0.020%
Iron (Fe) 0.003% 10PPm
Heavy metals (Pb) 0.0015% 10PPm
Arsenic (As2O3) 1PPm
Other amino acids Chromatographically not detectable
Loss on drying 0.5% 0.5%
Residue on ignition(sulfated) 0.3% 0.10%
Assay 98.5-101.5% 99.0-101.0%
PH 10.5-12.0
Organic volatile impurities Meets the requirements
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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 /
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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
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calculated as Pb, 1ppm
Water Insolubles05%
Shelf Life(month)12
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English name: Calcium Nitrite
Molecular formula: Ca(NO2)2
Molecular weight: 132
CAS NO. 13780-06-8
HS CODE: 28341000
UN NO.: 2627 5.1 type oxidizing agent
Properties: White powder without crystal water. It is tasteless and toxic. Easily in water and presents light yellow solution.

Specifications:
Item Superior grade First grade Second grade
Calcium Nitrite[Ca(NO2)2 as dry basis]% 94 92 90
Calcium Nitrate[Ca(NO3)2 as dry basis]% <4 <5 <6
Calcium hydroxide[Ca(OH)2 as dry basis]% <1.0 <1.0 <1.0
Moisture % <1.0 <1.0 <1.0
Water insoluble matter % <0.6 <1.0 <1.0

Uses:
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2. Inhibitor of steel in concrete.
3. Can prepare compound early strength agent.
Packing 25/50/1000KG woven bag lined with plastic or according to customer's requirements.

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