Offers to Sell

D-ribose is an important five-carbon monosaccharide with chemical formula C5H10O5. It is an important component of RNA and ATP, and plays an important role in the formation of life. D-ribose is also an important drug intermediate used in the production of various nucleic acid drugs. Specification Melting Point 88-92 °C(lit.) Boiling Point 191.65°C (rough estimate) Density 1.1897 (rough estimate) Refractive Index -21 ° (C=1, H2O) Storage Condition 2-8°C Solubility H , 2O: 0.1 g/mL, clear, colorless to light yellow Appearance Crystalline Powder Acidity Coefficient (pKa) 12.46±0.20(Predicted) Color White to light beige or slightly yellow PH 7 Water Solubility Soluble in water. Insoluble in ether. InChIKey HMFHBZSHGGEWLO-SOOFD , HNKSA-N Safety Information Dangerous Goods Sign Xi Hazard Category Code 36/38 Safety Instructions 24/25-37/39-26 WGK Germany 3 RTECS VJ2275000 , F 3-10 TSCA Yes HS CODE 29400090

Minimum Order: 1 bags

YIHUA 1000B / 1000A 3-IN-1 Infrared BGA Rework Station: SMD Hot Air Gun + 540W Preheating Station + 75W Soldering Irons, YIHUA 1000B personal BGA rework station 3 in 1 SMD Hot Air Gun+75W Soldering Irons+540W Preheating Station. YIHUA 1000B Soldering rework station: powerful electronics repairing machine for all kinds motherboard / repair, YIHUA 1000B 3-IN-1 Infrared BGA Rework Station for Personal Repair Shop: motherboard / laptop / mobile phone motherboard repair Feature: 1. Using the new SAMSUNG microcomputer processor PID programmable temperature control technology and uses an infrared source and optics to target heat to individual components without dislodging other SMT parts by way of eddies air currents. 2. Adopt infrared weld technology which independent exploration , infrared penetration strength , components uniform heating , beyond the traditional hot air heating vowed to prevent blow off the IC surrounding small components. 3. Technician focused infrared heat is easy to target most component removal/replacement and re-work. 4. Infrared heat source bulbs are long-lived , un-expensive and easily replaced. 5. Has bright delicate , low voltage LED lighting , safety and energy conservation. 6. It has External Sensor Temperature control mode , that is detected by the sensor IC surface temperature control temperature , this function is good for freshman operation , it’s safe way protect components . 7. MountTechnology (SMT) components 15-35cm in size. 8. This machine has 540W heating system , widely to 120mm*120mm. 9. Preheating plate color is black , from the photics point of view , black color easy to absorb heating , shorten the warm-up time. 10. Powerful human function design , with the following functions A. Temperature correction function Correction of temperature range -50°C~+50 °C ( Infrared lamp analog value 580 ). B. Celsius / Fahrenheit temperature display function 11. This machine also has soldering iron function , if you have the device , you can used for all of the components solder , desoldering , preheating , repair all components , especially Micro BGA components.

Minimum Order: 1 bags

1600W JDI 863 BGA Digital Rework Station for mobile phones repair, JDI 863 Hot Air Gun rework station for phone motherboard repair, cell phone repairing BGA soldering rework station. Features : This hot air rework station uses heating device to warm up air which can be used to weld. There are three working channels CH1, CH2, and CH3, and the air volume and temperature of each channel can be set. Equipped with magnetic sensor, as long as holding the handle, the machine can quickly work. With auto sleep function, can set up while sleep status. Warming up quickly, accurate and stable temperature control, make it real lead-free welding. Using frequency conversion blower, which has adjustable, large range air flow, can achieve a variety of purposes.

Minimum Order: 1 bags

Product Name: 4-Chlorophenol CBNumber: CB9477357 MF: C6H5CIO MW: 128.56 CAS: 106-48-9 Usage: Agro-intermediate Product Name 4-Chlorophenol Other Name 4-Chlorophenol solution Parachlorophenol Para chlorophenol 4-chloro phenol 4-chloro-1-hydroxybenzene 4-chloro-ph , eno 4-Chlorophenol(form2) 4-chloro-phenole Applied 3-78 applied3-78 chlorophenols,solid p-Ch , lorfenol P-CHLORO PHENOL 4-Hydroxychlorobenzene 4-chlorophenol , Benzene, 1-chloro-4-ethoxy- Chlorophenol CAS 106-48-9 EINECS 203-402-6 Molecular Formula C6H5ClO Molecular Weight 128.609 inchi InChI=1/C8H9ClO/c1-2-10-8-5-3-7(9)4-6-8/h3-6H,2H2, , 1H3 Density 1.103g/cm3 Boiling point 213°C at 760 mmHg Flash point 83.7°C Vapor pressure 0.245mmHg at 25°C Refractive index 1.51 Dangerous goods sign Xn;N Risk term R20/21/22;R51/53  Security term S28A;S61 Dangerous Goods Transport Number UN 2904;UN 2905;UN 2020

Minimum Order: 1 bags

YIHUA 8509 Micro Hot Air Gun Soldering Station with 3.5/3/2.5/2 mm Nozzle Temperature Adjustable SMD Rework Station Welding Tools. Feature: 1: Unique micro nozzles: 4mm nozzles ,3.5mm nozzle, 3mm nozzle, 2.5mm nozzle, 2mm nozzle, 1.5mm nozzle 2: Low noise design: When in max air volume, the noise from detector is less than 60DB, similar to normal indoor conversation sound. 3: Automatically cool-down function: In automatic mode, temperature will cool down to 100℃ when hot air handle is put in the holder because holder is equipped with an automatic sensor. When in manual mode,this automatic function will be stopped. 4: Rotatable display screen.It is convenient to adjust the display screen position via slight press 5. ℃ and ℉ conversion function. 6. Temperature correction funtion. 7.Air gun auto. And manual conversion function Attention： Please remove the screw at the bottom before use

Minimum Order: 1 bags

China hexamethylcyclotrisiloxane supplier preferred Clent Chemical. Factory direct sales, higher content, more stable quality. High content, high quality, large quantity and better price! Hexamethylcyclotrisiloxane operation process 1.Deployment ratio: hexamethylene cyclotrisiloxane: compound = 1:1 (mass ratio) mixed evenly, get shrinkage agent. 2.vulcanization: according to the demand will be mixed with good shrinkage agent into silicone rubber mixing uniform, after a period of vulcanization, and then by 180 degrees Celsius an hour of 2 vulcanization. Storage methods of hexamethylcyclotrisiloxane Hexamethylcyclot , risiloxane stored in a cool, dry, well ventilated warehouse. Keep away from fire and heat. Keep out of direct sunlight. The package is sealed. It should be stored separately from acids and edible chemicals and should not be mixed. The storage area should be equipped with suitable materials to contain leaks. Hexamethylcyclotrisiloxane purposes In addition to the synthesis of general organosilicon polymer, can also be used to prepare specific organosilicon compounds, as a variety of surface treatment agent, coupling agent, crosslinking agent, etc Hexamethylcyclotrisiloxane technical indicators 1.Appearance: white crystalline solid; 2.quality score /% : ≥98; 3.density: (25℃, g/cm3) : 1.02; 4.melting point: 64.5℃ 5.boiling point: 134℃ 6.Solubility: soluble Hexamethylcyclotrisiloxane matters needing attention Irritates eyes, respiratory system and skin. Hexamethylcyclotrisiloxane; D3, white crystal, melting point 75℃, shrinkage rate 0.6-0.8%, used for silicone rubber shrinkage treatment. Specification Mel , ting Point 50-64 °C (lit.) Boiling Point 134 °C (lit. Density 1.02 Refractive Index 1.417 Flash point 95 °F Storage Condition Inert atmosphere,Room Temperature Solubility soluble in most organic solvents. Appearance solid Co , lor White to Almost white Water Solubility may decompose Stability Stable, but moisture sensitive. Incompatible with strong oxidizing agents. Highly flammable. Safety Information Dangerous Goods Sign F,Xi Hazard Category Code 11-36/37/38 Safety Instructions 26 Dangerous Goods Transportation No UN 1325 4.1/PG 2 WGK Germany 3 RTECS GZ4705000 , Hazard Note Irritant TSCA Yes Hazard Level 4.1 Packaging Category II HS CODE 29319090

Minimum Order: 1 bags

Product Name: 3-Mercaptopropionic Acid CBNumber: CB1852730 MF: C3H6O2S MW: 106.14 CAS: 107-96-0 Usage: Agro-intermediate Product Name 3-Mercaptopropionic acid Other Name 3-Mercaptopropanoic Acid Thiopropionic acid Mercapto Propionic Acid 3-sulfanylpropanoic acid 3-sulfanylpropanoate CAS 107-96-0 EINECS 203-537-0 Molecular Formula C3H5O2S Molecular Weight 105.136 inchi InChI=1/C3H6O2S/c4-3(5)1-2-6/h6H,1-2H2,(H,4,5)/p-1 , Density 1.218 g/mL at 25 °C (lit.) Boiling point 217.4°C at 760 mmHg Flash point 100.7°C Vapor pressure 0.0509mmHg at 25°C Refractive index n20/D 1.492(lit.) Dangerous goods sign T Risk term R23/24/25;R34  Security term S26;S36/37/39;S45 Dangerous Goods Transport Number UN 2922

Minimum Order: 1 bags

Octamethylcyclotetrasiloxane(D4) is colorless, insoluble in water, soluble in organic solvents . Polymerization of organic silicone polymer under acid-base catalysis is the basic raw material of silicone oil and silicone rubber. It can also be directly used as rubber filler treatment agent and cosmetic raw material.  Cas: 556-67-2 Molecular Formula: C8H24Si4O4              ,                   Molecular Weight: 296.63 EINECS:209-136-7 Flashing Point: 56 °C Density (P20)g/cm3: 0.956 Appearance Colorless and transparent oily liquid Chroma/Hazen ≤10 Purity/% ≥99 Density： （ 25℃ ， g/cm3） 0.9558 Melting Point 17.6℃ Boiling point 175.8℃ Refraction index（ 25℃ ） 1.3960~1.3970 【 Standard】 GB/T 20435-2006 【 Application】 It’s a basic raw material of silicone oil (modified silicone oil),silicone emulsion,silicone rubber ,silicone resin and other silicone products, and can also be directly used as rubber filler treatment agents or raw material for cosmetics. 【 Precautions】 The mixture of vapor and air is explosive. It’s easy to form explosive mixtures when fine dispersion composition in the air .Static electricity will be accumulated and may ignite vapors. Prevent a possible fire hazard by bonding and grounding or using inert gas purge. Keep container closed and away from heat, sparks, and flame. 【 Package storage and transportation】 1、 Packing:200L iron drum(N.W.190 ㎏/drum） ； IBC （ N.W. 950 kg） 2、 Transportation:Keep container closed and away from heat, sparks, flame and the direct sunlight, acid and alkali 3、 Storage:Stored at 20℃ ～40℃ warehouse, pls do the antifreeze preparations when the temperature is below 17 ℃. 4、 Shelf time:6 months.Beyond the time ,it can still be used after re-test,if the test result meets the requirement of this standard.

Minimum Order: 1 bags

1. Product Name: Stainless steel double bowls pet bowl 2. Color: black, blue, rose red 3. Material: Silicone 4. Size: 45 * 28CM 5. Weight: 480G 6. Product Features: 1> the use of food grade stainless steel and food grade silicone materials, safety and health, non-toxic odor 2> silicone chassis, acid-proof, alkali-resistant, non-expansion, good elasticity, strong recovery, high and low temperature resistance, never deformation 3> curling design, anti-overflow leak-proof, clean and sanitary, not waste 4> can be repeatedly washed, easy to clean, not aging, durable Contact information: Shenzhen JYC Technology Ltd; Whatsapp/Wechat:+86-13714911587 Skype:ivy_b , othwinner E-mail :sales1（@）bothwinner.com

Minimum Order: 100

Product Name: Isosorbide dimethyl ether Other Name: 1,4:3,6-Dianhydro-2,5-di-O-methyl-D-glucitol; DMI CAS NO.: 5306-85-4 Assay: 99.0% Appearance: Clear colorless liquid Acid value: 1.5mg KOH/g Usage: Pharmaceutical and organic synthesis intermediates, cosmetic raw materials and solvent Package: 200kg/drum or as customized Product Name Isosorbide dimethyl ether Other Name 1,4:3,6-Dianhydro-2,5-di-O-methyl-D-glucitol; DMI CAS 5306-85-4 EINECS 226-159-8 Molecular Formula C8H14O4 Molecular Weight 174.19 inchi InChI=1/C8H14O4/c1-9-5-3-11-8-6(10-2)4-12-7(5)8/h5 , -8H,3-4H2,1-2H3 Density 1.15 Boiling point 93-95 ºC (0.1 mmHg) Flash point 108 ºC Vapor pressure 0.073mmHg at 25°C Refractive index 1.462 Dangerous goods sign / Risk term / Security term S23;S24/25 Dangerous Goods Transport Number /

Minimum Order: 1 bags

1. Product Name:Toothbrush type foundation brush 2. Material: man-made fiber + PP handle 3. Product Features: 1> made of high quality man-made fiber material, fast on the makeup, smear uniform, leaving no marks 2> soft hair, no smell, skin-free stimulation 3> PP handle, non-slip design, grip comfortable, easy to fall off Contact information: Shenzhen JYC Technology Ltd; Whatsapp/Wechat:+86-13714911587 Skype:ivy_b , othwinner E-mail :sales1（@）bothwinner.com

Minimum Order: 100

Dicyclopentadiene (DCPD) is an organic compound with the chemical formula C10H12. It is a dimer produced by Diels-Alder reaction of cyclopentadiene. It has two isomers, internal and external. It is colorless crystal, insoluble in water, soluble in alcohol, ether and carbon tetrachloride. Speficication MeltingPoint 33 °C(lit.) BoilingPoint 170 °C(lit.) Density 0.986 g/mL at 25 °C(lit.) RefractiveIndex n20/D 1.511 Flash point 114 °F Storage Condition Store below +30°C. Solubility mmiscible with water. Appearance Liquid Colo , r Clear Water Solubility mmiscible with water. Stability Stable at room temperature, but may form explosive peroxides if stored in contact with air. Incompatible with oxidizing agents. Decomposes on heating. Flammable. Mixtures of the vapour with air are explosive InChIKey HECLRDQVFMWTQS-UH , FFFAOYSA-N Safety Information DangerousGoodsSign F,Xn, , N,T Hazard Category Code 11-20/22-36/37/38-51/53-23-22-10 SafetyInstructions 36/37-61-45-26 , DangerousGoodsTransportation No UN 2048 3/PG 3 WGK Germany 3 TSCA Yes Packaging Category III HS CODE 2902199 Toxicit LD50 orally in Rabbit: 353 mg/kg LD50 dermal Rabbit 4940 mg/kg

Minimum Order: 1 bags

1. Product Name: Pet Care Gloves 2. Material: Silicone 3. Weight: 71G 4. Size: 24X19.5CM 5. Product Features: 1> the use of high-quality environmentally friendly materials made of silicone, safety and environmental protection, wear toughness good, durable 2> Five-finger design, easy to wear, detailed care does not hurt the skin, can quickly clean floating hair, smooth hair 3> glove back breathable mesh design, comfortable and breathable, careful care of your hands 4> wrist paste design, free to adjust the size, to prevent loss Contact information: Shenzhen JYC Technology Ltd; Whatsapp/Wechat:+86-13714911587 Skype:ivy_b , othwinner E-mail :sales1（@）bothwinner.com

Minimum Order: 100

Product Name: 2,3-Dihydrofuran CAS NO.:1191-99-7 Assay: 99.0%min Appearance: colourless transparent liquid Package: 180kg/iron-drum and long-term inventory Usage:Pharmaceutical intermediates and Organic synthesis intermediates Product Name 2,3-Dichloropropene Other Name 2,3-dihydrofuran stab 2,3-DHF 2,3-dihydro-fura 2,3-Dihydro , genfuran 4,5-Dihydrofuran 2 3-DIHYDROFURAN 99+% 2,3-DIHYDROFURANE CAS 78-88-6 EINECS 214-747-7 Molecular Formula C4H6O Molecular Weight 70.0898 inchi InChI=1/C4H6O/c1-2-4-5-3-1/h1,3H,2,4H2 Density 0.959g/cm3 Boiling point 54.5°C at 760 mmHg Flash point -24°C Vapor pressure 258mmHg at 25°C Refractive index 1.45 Dangerous goods sign F;Xn   Risk term R11;R19;R22;R36 Security term S16;S18;S26;S39 Dangerous Goods Transport Number UN 2047

Minimum Order: 1 bags