以對二甲苯為原料，將液相氧化生成粗對苯二甲酸，經(jīng)加氫精制、結(jié)晶、分離、干燥得到對苯二甲酸。
The crude terephthalic acid was produced by liquid phase oxidation of p-xylene, which was hydrotreated, crystallized, separated and dried to produce terephthalic acid.
性能:白色結(jié)晶或粉末，低毒，易燃。如果與空氣混合，在一定限度內(nèi)遇到火就會燃燒甚爆炸。其自燃點為680℃，著火點為384~421℃，上升熱為98.4kJ/mol，燃燒熱為3225.9kJ/mol，密度為1.55g/cm3。溶于堿性溶液，微溶于熱乙醇，不溶于水、乙醚、冰醋酸和氯仿。
Performance: white crystal or powder, low toxicity, flammable. If it is mixed with air, it will burn or even explode when encountering fire within a certain limit. Its self ignition point is 680 ℃, ignition point is 384 ~ 421 ℃, rising heat is 98.4kj/mol, combustion heat is 3225.9kj/mol, density is 1.55g/cm3. Soluble in alkaline solution, slightly soluble in hot ethanol, insoluble in water, ether, glacial acetic acid and chloroform.
本產(chǎn)品是聚酯的主要原料，可直接與乙二醇酯化得到聚酯，也可制成工程聚酯塑料，還可作為增塑劑和染料中間體的原料。
This product is the main raw material of polyester. It can be directly esterified with glycol to obtain polyester, can also be made into engineering polyester plastic, and can also be used as the raw material of plasticizer and dye intermediate.
精制對苯二甲酸的包裝、儲存袋均內(nèi)襯塑料薄膜，每袋凈重1000±2kg。包裝袋上應(yīng)印有制造商名稱、地址、商標、品名、等級、批號、凈重和標準代號。不銹鋼槽車也可用于裝載。裝貨前，檢查油船是否清潔和干燥。裝入后，進氣道應(yīng)密封，用鉛密封。產(chǎn)品運輸應(yīng)防火、防潮、防靜電。袋裝產(chǎn)品應(yīng)輕裝輕卸，防止包裝破損。裝卸速度要控制，防止靜電產(chǎn)生。儲存在陰涼、通風(fēng)、干燥的倉庫內(nèi)，遠離火源和熱源，與氧化劑、酸堿物品分開存放。它應(yīng)該避免日曬雨淋，不應(yīng)該堆放在露天。
The packaging and storage bags of purified terephthalic acid are lined with plastic film, and each bag has a net weight of 1000 ± 2kg. The packaging bag shall be printed with the manufacturer's name, address, trademark, product name, grade, batch number, net weight and standard code. Stainless steel tank cars can also be used for loading. Before loading, check whether the tanker is clean and dry. After installation, the air inlet shall be sealed with lead. Products shall be transported in a fire-proof, moisture-proof and anti-static manner. Bagged products shall be loaded and unloaded lightly to prevent package damage. Loading and unloading speed shall be controlled to prevent static electricity. Store in a cool, ventilated and dry warehouse, away from fire and heat source, separate from oxidant and acid-base articles. It should be kept away from the sun and rain and should not be stacked in the open.
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