Factory Direct Sales L(+)-Diethyl L-tartrate CAS NO.87-91-2

Superiority PackingStandard packaging includes the following: 25kg/drum Other package sizes are available upon request. StorageStore in a well-ventilated, cool, dry area, out of direct sunlight. Keep containers tightly closed when not in use. Period of validity24 months ? Product Superiority ? 1.High quality

Description:

Superiority

PackingStandard packaging includes the following: 25kg/drum Other package sizes are available upon request.

StorageStore in a well-ventilated, cool, dry area, out of direct sunlight. Keep containers tightly closed when not in use.

Period of validity24 months

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Product Superiority

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1.High quality with best price

2.Well reputation

3.Factory with strong supply ability

4. Prompt shipment

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Packing & Delivery

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FAQ

1. who are we? We are based in Shandong, China, start from 2014,sell to Southern Europe(00.00%),Domestic Market(00.00%),South America(00.00%),North America(00.00%),Eastern Europe(00.00%),Africa(00.00%),Eastern Asia(00.00%). There are total about 11-50 people in our office. 2. how can we guarantee quality? Always a pre-production sample before mass production; Always final Inspection before shipment3. why should you buy from us not from other suppliers? Have a strong ability to warehousing logistics and release permit of dangerous goods export right and use right, has a strong factory as a backstop. 4. what services can we provide? Accepted Delivery Terms: FOB,CFR,CIF,EXW; Accepted Payment Currency :USD; Accepted Payment Type: T/T,L/C; Language Spoken:English,Chinese

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Our services

<1> Free samples for customer further evaluation before order and after production.

<2>Quality controlling throughout the production,inspection and shipment.

<3> Packing according to customers requirements.

<4> the nearest port to customer site,very convenient for discharge

<5> Complete documents for customer customs clerance

Friends at home and abroad, welcome to our company.

Want to get the latest best offer call me NOW!!! PLEASE CONTACT ME !!!!!!!

Details

Content

Analysis: Accurately weigh 1.0 g of the sample and place it in a 125 ml Erlenmeyer flask containing a small amount of pumice. Prepare a similar flask for a blank test. Add 25.0 ml of 0.5 mol/L potassium hydroxide ethanol solution to each flask, and reflux in a steam bath for 1 hour. After cooling, add 10 drops of phenolphthalein reagent (TS-167) to each flask, and titrate the remaining alkali with 0.5 mol/L hydrochloric acid. Calculate the percentage content using the following formula: Where b—volume of hydrochloric acid consumed in the blank test, ml; s—volume of hydrochloric acid consumed in the sample test, ml; W—mass of the sample, g.

Usage Limits

FEMA (mg/kg): Soft drinks 50, cold drinks 200, candy 200, baked goods 200.

Chemical Properties

Colorless, oily, viscous liquid with a faint wine aroma. Melting point 17℃, boiling point 280~281℃, or 153℃ (1600Pa), optical rotation [α] ≥ +7.5°~+8.5°. Slightly soluble in water, soluble in non-volatile oils, ethyl acetate, and ether.

Uses

Carrier solvent (resins, glues, etc.). GB2760-1996 specifies it as a permitted food flavoring.

Uses

Used as a solvent and plasticizer. Used in food additives, pharmaceutical synthesis, and the resolution of chiral compounds. Produced by esterification of tartaric acid and ethanol.

Production Method

Produced by esterification of tartaric acid and dimolecules of ethanol under appropriate conditions.