Додецил/тетрадецил диметил амини （DMA1214)

Имоти

♦ Chemical Structure

Dodecyl/Tetradecyl Dimethyl Amines;

Dodecyl dimethyl amine: C12H25N(CH3)2 (12-carbon alkyl chain).

T etradecyl dimethyl amine: C14H29N(CH3)2 (14-carbon alkyl chain).

Classification: Tertiary amines with two methyl groups and a long alkyl chain, acting as cationic surfactants when protonated.

♦ Физическо състояние

C12-14-alkyldimethyl amines is colorless to light yellow liquids, possibly with a slight odor depending on purity

♦ Разтворимост

Dodecyl/Tetradecyl Dimethyl Amines(DMA1214) Sparingly soluble in water, highly soluble in organic

solvents (e.g., алкохоли, ethers, hydrocarbons).

♦ Basicity

C12-14-alkyldimethyl amines weakly basic (pKa ~9–10), forming salts with acids.

♦ Melting & Boiling Points:

C12-14-alkyldimethyl amines vary with alkyl chain length. Dodecyl dimethyl amine (C12) has a melting point

of ~15–20°Cand boiling point of ~240–250°C; tetradecyl dimethyl amine (C14) melts at ~25–30°C and boils at ~280–300°C.

♦ Surface Activity:

Dodecyl/Tetradecyl Dimethyl Amines(DMA1214) Amphiphilic structure reduces liquid surface tension.

♦ Weak Alkalinity

Dodecyl/Tetradecyl Dimethyl Amines(DMA1214) Reacts with acids to form quaternary ammonium salts,enhancing water solubility.

♦ Reactivity

C12-14-alkyldimethyl amines can be further derivatized into cationic surfactants (e.g., quaternary compounds)

or betaine-type amphoteric surfactants.

 

Приложения

♦ Surfactant Raw Materials

— Cationic Surfactants: Used in detergents, fabric softeners, and hair conditioners (e.g., quaternary ammonium salts).

— Biocides: Quaternary derivatives are common in disinfectants (e.g., benzalkonium chloride)

♦ Industrial Auxiliaries

–Petroleum Industry: As corrosion inhibitors, demulsifiers, or drilling fluid additives.

–Textile Industry: Antistatic agents and softeners.

–Metalworking: Lubricants and rust preventives.

♦ Cosmetics & Personal Care

Emulsifiers, thickeners, and conditioning agents for hair and skin.

♦ Other Uses

Intermediates for synthesizing amides, imidazolines, and other amine-based compounds.

 

Product Process

♦ Подготовка на суровината

–Fatty Alcohols: Derived from coconut or palm oil hydrogenation to produce C12 (dodecanol) and C14 (tetradecanol).

–Dimethylamine (DMA): Serves as the amination reagent.

♦ Реакционни условия

–Catalyst: Nickel- or copper-based catalysts (e.g., Cu-Ni alloy).

–температура & Pressure: Reaction occurs at ~180–220°C under 3–5 MPa.

–Reaction Equation:R-OH+(CH3​)2​NHCatalyst​R-N(CH3​)2​+з2​О (R = C12 or C14 alkyl chain).

♦ Separation and Purification

–Unreacted DMA and water are removed via distillation.

–Fractional distillation yields high-purity dodecyl and tetradecyl dimethyl amines.

♦ Environmental Considerations

Modern processes emphasize green chemistry, using bio-based feedstocks or optimized catalysts to improve selectivity

♦ Сушене и пакетиране

Once the DMA1214 product is obtained and purified, it is typically dried to remove any residual moisture.

The dried C12-14-alkyldimethyl amines is then packaged in suitable containers, ensuring proper sealing to maintain its quality.

Adequate labeling and storage conditions are maintained to ensure safe handling and storage of the product.

инспекция

♦ Процес на инспекция

Входяща проверка: Основните суровини,се проверяват за тяхното съдържание, appearance and other

main properties.

Проверка на храненето: принципът на подаване на суровина е "първи влязъл - първи излязъл"., and the appearance of the

main raw materials is randomly inspected according to whether there is a big change in the storage

conditions before feeding.

Вземане на партидни проби в производствения процес: По време на производствения процес, the main indexes of each batch

of products: съдържанието и киселинното число ще бъдат изследвани три пъти в различни периоди от време.

Проверка на съхранението: Всяка партида (4тона) се проверява преди съхранение.

Изходяща проверка: Според количеството, поискано от клиентите, the products will be sampled

and inspected.

Проверка преди изпращане: според изискванията на клиента, може да се извършва проверка от трета страна

върху продуктите преди изпращане.

♦ Метод на проверка

• Physical Appearance: Визуална инспекция

• Purity Analysis:Газова хроматография (GC)

• Acid Value:Потенциометрично титруване

• Water Content:Анализатори на влага

• Refractive Index:Рефрактометър

• Density:Плътномер

Маркиране, опаковка, транспортиране и съхранение

♦ Маркиране

Всяка партида продукти трябва да бъде придружена от сертификат за съответствие, включително: името на

производител, името на продукта, номера на производствената партида, нетното тегло на барел, на

quality level and the implementation of the standard number.weight, quality grade and implementation

standard number.

♦ Опаковане

Опаковани в чисти и сухи пластмасови варели, net weight 160±0.3kg per drum or 800±0.5kg, компресиран и

запечатани след всяка партида.

♦ Транспорт

Този продукт е опакован в пластмасови варели, по време на транспортиране и товарене/разтоварване, трябва да бъде внимателно

и внимателно го сложете, и предпазвайте от удар.

♦ Съхранение

Мястото за съхранение трябва да е хладно, суха и проветрива. Направете пожароустойчиви и устойчиви на дъжд.