Please click here to check who's online and chat with them.

Fmoc-L-Proline(Cas:71989-31-6)

Supplier From China
May-22-24

Fmoc-L-Proline(CAS:71989-31-6)


Recent User Reviews

This user has not received any reviews yet!

Verification Status


 
 
Contact Supplier
Renew

More Items Similiar to: Fmoc-L-Proline(Cas:71989-31-6)

GOLD Member
VERIFIED
Nov-02-20
Supplier From Vapi, Gujarat, India
GOLD Member
Aug-06-22
 
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
GOLD Member
Jul-11-22

Calcium Nitrite

$590.00
MOQ: Not Specified
 
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:
1. Antifreezing agent.
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.
GOLD Member
Feb-02-18
 
Commodity: Calcium carbide
Molecular formula:CaC2
Molecule Weight: 64.10
H.S code:28491000
CAS: 75-20-7
UN NO.1402
HAZARD CLASS: 4.3

Application: It is a kind of basic material for organic synthesis, and can produce acetylene gas for cutting and welding, also be material for calcium cyanamide.

Appearance: Grey, black solid, purple when its purity is more than 90%.
Granule:4-25mm / 15-25mm / 25-50mm / 50-80mm /25-80/ 80-120mm

Package: Net in 100kg or 50kg new iron drums with nitrogen.

Specification: GB10665-2004

Specification Superfine Grade First Grade Second Grade
Gas yield(L/kg)L/kg 305 295-305 285-295
PH3 content in acetylene (PH3%) 0.06 0.08 0.08
H2S content in acetylene (H2S%) 0.1 0.1 0.1

Loading weight in 1 x 20fcl:22.5mt
GOLD Member
Mar-18-24
 
Potassium Monopersulfate compound, a white, free flowing crystalline granule, is non-toxic, odorless, and easily soluble in water. It is an efficient, environmentally friendly, and multifunctional acidic oxidant.
General Information
Product Name Potassium Monopersulfate compound
CAS 70693-62-8
Chemical formula 2KHSO5 KHSO4 K2SO4
Molecular weight 614.7


Specification
Appearance White, free flowing granule
Available Oxygen, % 4.5
KHSO5,  % 42.8
Loss on Drying  % 0.15
Bulk Density, g/L 0.80
pH (10g/L,25 C) 2.0 .4
Sieve Residue on 75 m test sieve, % 90.0

Packaging
Product is packaged in plastic woven bags lined with polyethylene film, with a net weight of 20kg/bag or 50kg, or the packaging form and net content can be determined through negotiation according to customer requirements.

Storage
Store in a cool and well ventilated warehouse to prevent exposure to sunlight, rain, and moisture. Prohibit mixing with reducing substances for storage.
GOLD Member
Feb-02-18
 
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
GOLD Member
Aug-16-22
 
Product Name: Sodium permanganate
Use level: Industrial
Content: 40 (%)
CAS Number: 10101-50-5
Molecular formula:NaMnO4
Molecular Weight: 141.93

Appearance: purple liquid. A density of 1.36 ~ 1.39 g / cm3, soluble in water, ethanol and ether, soluble in liquid ammonia. Decomposition in alkali. Strong oxidizing. And chemical properties similar to potassium permanganate.

Purposes: as oxidants, disinfectants, fungicides and phosphorous antidotes. Toluene is also used to manufacture saccharin, o-toluene sulfonamide and organic synthesis and purification of phenol wastewater treatment. Can be used for circuit boards, metal surface cleaning, the conductive film cleaning to remove grease, electrolytic manganese dioxide, chemical fiber finishing, electroplating addition to hydrogen sulfide and other odors, as well as water treatment and so on.

Packaging and storage: Industrial Pails barrel, net weight 25kg plastic drum, 250kg steel-plastic composite barrels, 1250kg IBC barrels packaging. Store in a cool dry place.

Quality Standard:  
Items index
Sodium permanganate (NaMnO4) Content / (%) 40
Water-insoluble content / (%) 0.01
Potassium (K) content / (%) 0.22
pH value 6 ?8
Density / (g/cm3) 1.36 1.39
Chloride (Cl) content / (%) 0.02
GOLD Member
May-04-22
 
Commodity: Potassium Amyl Xanthate

Product Nature
Chemical name: Potassium Amyl Xanthate (PAX)
Equivalent to : Z-6, AERO 350 xanthate
Molecular Formula: C5H11OCSSK
Physical characteristics: Slight yellow or grey yellow free flowing Powder or pellet and soluble in water. It is a xanthate based on the C5 alkyl isoamyl alcohol in the potassium salt form
Testing method: Lead acetate titration
CAS Number: 2720-73-2
EINECS No.: 213-180-2

Use
A Collector With High Collection And Normal Selectivity,widely Use In Floatation Of CU/PB/NE AND PYRITE, Especially For The Floatation Of The Gold In Gold And Copper Mine.it Could Make Good Result In Copper And Lead Oxidized Ore.ofeen Used In Rough Selecting And Scavenging.

Specifications
Chemical components Specification 1 Specification 2
Purity 85% Min 90% Min
Moisture & volatiles 10% Max 4% Max
Free alkali 0.5% Max 0.2% Max

Packing and Storage
120KG IRON DRUM,134 DRUMS PER 20'FCL,16.08MT; (OR 110-180KG IRON DRUM)
850KG Wooden Box,20 Box Per 20'fcl,17mt; (or 500kg,800kg,850kg Wooden Box With Inner BAG) 25-50KG WOVEN BAG
GOLD Member
Aug-06-22

2 - Naphthol

$2.3k
MOQ: Not Specified
 
2-Naphthol Basic information
Chemical Properties Application Preparation
Product Name: 2-Naphthol
Synonyms: c.i.37500;c.i.azoiccouplingcomponent1;c.i.developer5;Developer A;Developer AMS;Developer BN;developera;developerams
CAS: 135-19-3
MF: C10H8O
MW: 144.17
EINECS: 205-182-7
Product Categories: Fluorescent;Naphthalene;pigments;alcohol;MICROCIDIN;Color Former & Related Compounds;Developer;Functional Materials;Intermediates;Aromatic Compounds;Alphabetical;Bioactive Small Molecules;Biochemicals and Reagents;Building Blocks;C9 to C20+;Cell Biology;Chemical Synthesis;Fluorescent Indicators and Probes;Fluorescent Probes;Labels;N;Organic Building Blocks;Oxygen Compounds;Particles and Stains;pH Sensitive Probes and Indicators;Phenols;Dyestuff Intermediates;Aromatics
Mol File: 135-19-3.mol


2-Naphthol Chemical Properties
Melting point 120-122 C(lit.)
Boiling point 285-286 C(lit.)
density 1,28 g/cm3
vapor density 4.97 (vs air)
vapor pressure 10 mm Hg ( 145.5 C)
refractive index 1.5762 (estimate)
Fp 153 C
storage temp. Refrigerator
solubility methanol: soluble1g/10 mL, clear, colorless to light yellow
pka 9.51(at 25C)
form Powder, Crystals or Granules
color White
PH Range Non& uorescence (8.5) to blue & uorescence (9.5)
Water Solubility 1 g/L (20 C)
�»max 226nm, 265nm, 275nm, 286nm, 320nm, 331nm
Merck 14,6384
BRN 742134
Stability: Stable. Combustible. Dust may form explosive mixture with air. Incompatible with strong oxidizing agents, phenol.
Major Application Display device, semiconductors, photoimaging materials, inks, toner, chalk, security paper, molding materials, tin plating method, rubber, adhesive, leather, detergent, hair dyes, antimitotic drug, anticancer agent, antiinflammatory agent, treatment of acne vulgaris (pimples) and other dermal ailments (rashes, scratches, blemishes, hair loss), disorders
InChIKey JWAZRIHNYRIHIV-UHFFFAOYSA-N
CAS DataBase Reference 135-19-3(CAS DataBase Reference)
NIST Chemistry Reference 2-Naphthalenol(135-19-3)
EPA Substance Registry System 2-Naphthalenol (135-19-3)

Safety Information
Hazard Codes Xn,N
Risk Statements 20/22-50
Safety Statements 24/25-61
RIDADR UN 3077 9/PG 3
WGK Germany 2
RTECS QL2975000
F 8
Autoignition Temperature 430 C
TSCA Yes
HazardClass 9
PackingGroup III
HS Code 29071590
Hazardous Substances Data 135-19-3(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 1960 mg/kg LD50 dermal Rabbit > 10000 mg/kg


2-Naphthol Usage And Synthesis

2-Naphthol Preparation Products And Raw materials

Verification Status