Organic Intermediates

2-Mercaptobenzimidazole is chemical with molecular formula of C7H6N2S, which is mainly used in synthetic rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber and latex. Specification Melting Point 300-304 °C (lit.) Boiling Point 270.6±23.0 °C(Predicted) Density 1.42 R , efractive Index 1.5500 (estimate) Flash point >250°C Storage Condition 2-8°C Solubility 0 , .3g/l Appearance Powder Acidi , ty Coefficient (pKa) 10.24±0.10(Predicted) Color White to beige Water Solubility ＜0.1g/100ml at23.5℃ Safety Information Dangerous Goods Sign Xn Hazard Category Code 20/21/22-36/37/38-22 Safety Instructions 26-36-24/25 Dangerous Goods Transportation No UN 2811 6.1/PG 3 WGK Germany 2 RTECS DE1050000 , TSCA Yes Hazard Level 6.1 Packaging Category III HS CODE 29339910

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2-chloro-4-aminopyridine, white or light yellow crystals, melting point 89- 94°C, boiling point 299.9°C (760 mmHg), insoluble in water. Used as medicine, pesticide, pigment intermediate. Specification , Melting Point 90-94 °C(lit.) Boiling Point 153°C 5mm Density 1.2417 (rough estimate) Refractive Index 1.5110 (estimate) Flash point 153°C/5mm Storage Condition Keep in dark place,Sealed in dry,Room Temperature Solubility DMSO (Slightly), Methanol (Slightly) Appearance Crystalline Powder Acidity Coefficient (pKa) 4.73±0.30(Predicted) Color Light yellow Water Solubility Slightly soluble in water. InChIKey BLBDTBCGPHPIJK-UHFFF , AOYSA-N Safety Information Dangerous Goods Sign Xi Hazard Category Code 36/37/38 Safety Instructions 26-36-37/39-36/37/39 Da , ngerous Goods Transportation No 2811 WGK Germany 3 Hazard Note IRRITANT HS CODE 29333999

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Acetophenone, with molecular formula of C8H8O, is an organic compound, colorless or light yellow liquid, insoluble in water and easily soluble in most organic solvents. Specification Melt , ing Point 19-20 °C (lit.) Boiling Point 202 °C (lit.) Density 1.03 g/mL at 25 °C (lit.) Refractive Index n20/D 1.534(lit.) Flash point 180 °F Storage Condition Store below +30°C. Solubility 6.1g/l App , earance Liquid Color Clear colorless to light yellow Water Solubility 5.5 g/L (20 ºC) Stability Stable. Incompatible with strong oxidizing agents, strong bases, strong reducing agents. Combustible. InChIKey KWOLFJPFCHCOCG , -UHFFFAOYSA-N Safety Information Dangerous Goods Sign Xn,T,F Hazard Category Code 22-36-63-43-36/37/38-23/24/25-45-39/23 , /24/25-11-67-40 Safety Instructions 26-36/37-24/25-23-53-45-16-7 Dangerous Goods Transportation No UN 1593 6.1/PG 3 WGK Germany 1 RTECS AM5250000 , F 8 TSCA Yes Packaging Category III HS CODE 29143900

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5-chlorosalicylaldehyde is a chemical. Harmful if inhaled, ingested or absorbed through the skin. Irritating to eyes, skin, mucous membranes and upper respiratory tract. Specification Melting Point 100-102 °C(lit.) Boiling Point 217.69°C (rough estimate) Density 1.2683 (rough estimate) Refractive Index 1.5812 (estimate) Storage Condition Keep in dark place,Sealed in dry,Room Temperature Appearance Crystalline Powder Acidity Coefficient (pKa) 7.73±0.18(Predicted) Color White to very slightly yellow Sensitivity Air Sensitive BRN 636632 Safety Information Dangerous Goods Sign Xi,Xn Hazard Category Code 36/37/38-20/21/22 Safety Instructions 26-36-24/25-36/37/39 Da , ngerous Goods Transportation No UN2811/6.1/PG III WGK Germany 3 RTECS VN5450000 , Hazard Note Irritant TSCA Yes HS CODE 29130000

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Isobutyric acid, also known as 2-methylpropionic acid, is an organic compound with chemical formula of C4H8O2. It is a colorless liquid, insoluble in water, and miscible in ethanol, ether, chloroform, glycerin, propylene glycol, etc. It is mainly used in organic synthesis. Specification Mel , ting Point -47 °C (lit.) Boiling Point 153-154 °C (lit.) Density 0.95 g/mL at 25 °C (lit.) Refractive Index n20/D 1.393(lit.) Flash point 132 °F Storage Condition Store below +30°C. Solubility 618g/l App , earance Liquid Acidity Coefficient (pKa) 4.84(at 20℃) Color Clear colorless Odor 0.0015ppm PH 3.96(1 mM solution);3.44(10 mM solution);2.93(100 mM solution); Water Solubility 210 g/L (20 ºC) InChIKey KQNPFQTWMSNSAP-UHFFFAO , YSA-N Safety Information Dangerous Goods Sign Xn Hazard Category Code 21/22 Safety Instructions 23-36/37/39-24/25 Dange , rous Goods Transportation No UN 2529 3/PG 3 WGK Germany 1 RTECS NQ4375000 , F 13 TSCA Yes Hazard Level 3 Packaging Category III HS CODE 29156000

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5-Chloro-2-methylaniline, also known as 5-chloro-o-toluidine, fast red KB salt, is an organic compound with a chemical formula of C7H8ClN, mainly used in organic synthesis. Specification Mel , ting Point 22 °C Boiling Point 237 °C(lit.) Density 1.177 g/mL at 20 °C(lit.) Refractive Index n20/D 1.584(lit.) Flash point 320 °F Storage Condition Store below +30°C. Solubility Soluble in Alcohol Appearance Liquid After Melting Acidity Coefficient (pKa) pK1:3.85(+1) (25°C) Color Clear yellow to light brown Odor Characteristic odour PH 7.5 (5g/l, H2O, 25℃) Water Solubility < 1 g/L (22 ºC) Safety Information Dangerous Goods Sign Xn,T Hazard Category Code 22-36/37/38-40-45-23/24/25 Safe , ty Instructions 26-45-36/37/39-53 Dange , rous Goods Transportation No UN 3429 6.1/PG 3 WGK Germany 3 RTECS XU5075000 , TSCA Yes Hazard Level 6.1 Packaging Category III HS CODE 29214300 Toxicity LD50 orally in Rabbit: 464 mg/kg

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Glucose is a simple sugar monosaccharide having two isoforms, alpha and beta, with a chemical structure of C6H12O6 that acts as an energy source for both plants and animals by reacting with oxygen, generating carbon dioxide and water, and releasing energy. Specification Meltin , g Point 155 °C Boiling Point 232.96°C (rough estimate) Density 1.5620 Refr , active Index 53 ° (C=10, H2O) Storage Condition Refrigerator Appearance White Color Powder. Stab , ility If used and stored according to specifications, it will not decompose, no known hazardous reaction

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Pinacolone is an organic compound with the chemical formula of C6H12O. It is a colorless transparent liquid, soluble in ethanol, ether and acetone, slightly soluble in water, volatile in steam, with the smell of mint. It is often used as a solvent and extractant, and can also be used in organic synthesis. Specification Mel , ting Point -52.5 °C Boiling Point 106 °C(lit.) Density 0.801 g/mL at 25 °C(lit.) Refractive Index n20/D 1.396(lit.) Flash point 75 °F Storage Condition Flammables area Solubility 19g/l Appeara , nce Liquid Color Clea , r colorless to light yellow Odor 0.043ppm Water Solubility 2.44 g/100 mL (15 ºC) Stability Stable. Incompatible with strong oxidizing agents. Flammable. InChIKey PJGSXYOJTGTZAV-U , HFFFAOYSA-N Safety Information Dangerous Goods Sign F,Xn,Xi Hazard Category Code 11-22-10 Safety Instructions 9-16-29-33-20/21 Danger , ous Goods Transportation No UN 1224 3/PG 2 WGK Germany 2 RTECS EL7700000 , Hazard Note Irritant/Highly Flammable TSCA Yes Hazard Level 3 Packaging Category II HS CODE 29141990

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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

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

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

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