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碲
碲 · 碲丸 · 碲片 · 碲粉 · 碲粒 · 纯碲 · 碲珠 · 高纯碲
标识与物理属性
| CAS No. | 13494-80-9 |
|---|---|
| 分子式 | Te |
| 平均分子量 | 127.6 g/mol |
| 单同位素质量 | 129.9062244 g/mol |
| SMILES | [Te] |
| InChIKey | PORWMNRCUJJQNO-UHFFFAOYSA-N |
| PubChem CID | 6327182 |
| ChEBI | CHEBI:30452 |
| EC No. | 236-813-4 |
| DTXSID | DTXSID9032119 |
| 中文名 | 碲 |
化学与物理性质
| 极性表面积 | 0 |
|---|---|
| 氢键供体 | 0 |
| 氢键受体 | 0 |
| 可旋转键 | 0 |
| 重原子 | 1 |
| 形式电荷 | 0 |
| 复杂度 | 0 |
| 物质类别 | Metals -> Metalloid Compounds (Tellurium)Flammable agents - 3rd degree |
| SpringerMaterials Properties | phonon wavenumber |
| 气味 | Odorless. |
| 密度 | 6.24 (EPA, 1998) - Denser than waterwill sink6.11-6.276.0-6.25 g/cm³6.232 @25 °C6.24 g/mL at 25 °C (lit.) |
| Viscosity | 1.8-1.95 cP |
| Color/Form | Grayish-white, lustrous, brittle, crystalline solid, hexagonal, rhombohedral structureDark-gray to brown, amorphous powder with metal characteristics |
| 溶解性 | Insoluble (NIOSH, 2024)Insol in benzene, carbon disulfideINSOL IN HOT & COLD WATER, HYDROCHLORIC ACIDSOL IN NITRIC ACID, AQ REGIA, POTASSIUM CYANIDE, POTASSIUM HYDROXIDE, SULFURIC ACIDSolubility in water: noneinsoluble in H2O, benzene, CS2insoluble H2O, benzene, CS2 [MER06] |
| 沸点 | 1814 °F amorphous powder2534 °F crystalline solid (EPA, 1998)989.9 °C989.8 °C988 °C @760 [mm Hg]990 °C (lit.) |
| Decomposition | When heated to decomposition it emits toxic fumes of /tellurium/. |
| 熔点 | 842 °F (EPA, 1998)449.8 °C449.5 °C449.51 °C450 °C (lit.) |
| 蒸气压 | 1 mmHg at 968 °F (EPA, 1998)Vapor pressure between 511 and 835 °C is given by equation logP(kPa)= 6.7249-(5960.2/K)0 mmHg (approx)0.75 [mm Hg] @502 °C0Pa at 25℃ |
| 折射率 | INDEX OF REFRACTION: 1.0025SADTLER REFERENCE NUMBER: 5272 (IR, PRISM) |
| 储存条件 | Sealed in dry,Room Temperature |
| 形态 | shot |
| 颜色 | Silver-white |
| 比重 | 6.24 |
| Flame Color | Pale green |
| pH | 0.5 (20°C in H2O) |
| 电阻率 (resistivity) | 5.8-33 μΩ-cm, 20°C |
| 电导率 | 10000 S/m |
| 热导率 | 3 W/(m·K) |
| 比热容 | Cp(crystal): 0.2 J/(g·K)Cp(gas): 0.16 J/(g·K), at 25℃ |
| Merck | 13,9201 |
| 暴露限值 | ACGIH:TLV-TWA 0.1 mg/m3,as TeOSHA:PEL-TWA 0.1 mg/m3NIOSH:REL-TWA 0.1 mg/m3 |
| InChI | 1S/Te |
| InChIKey | VTLHPSMQDDEFRU-UHFFFAOYSA-N |
| SMILES | [Te] |
| Modulus of Elasticity | 40.0 GPa |
| Shear Modulus | 15.16 GPa |
| Poissons Ratio | 0.33 |
| Hardness, Brinell | 25 |
| CAS 数据库 | 13494-80-9(CAS DataBase Reference) |
| EPA化学物质信息 | Tellurium (13494-80-9) |
化学性质
斜方晶系银白色结晶。 溶于硫酸、硝酸、王水、氰化钾、氢氧化钾；不溶于冷水和热水、二硫化碳。
安全与法规
| GHS 分类 | DangerH360Df: May damage the unborn childSuspected of damaging fertility [Danger Reproductive toxicity]P203, P260, P263, P264, P270, P280, P318, P405, and P501 (click each P-code to see the statement)This chemical does not meet GHS hazard criteria for 0.8% (4 of 527) of reports.H301 (18.6%): Toxic if swallowed [Danger Acute toxicity, oral] |
|---|---|
| 法规信息 | Chemical: TelluriumHazard Traits - Reproductive ToxicityTellurium is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Tellurium are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 16-11-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/14525Tellurium: Does not have an individual approval but may be used under an appropriate group standardThe New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.) |
| 运输标签（DOT） | Poison |
| 火灾危害 | A finely divided suspension of elemental tellurium in air will explode. Burning tellurium produces toxic tellurium oxide gas. Avoid solid sodium, halogens, interhalogens, metals, hexalithium disilicide. Reacts with nitric acidreacts with concentrated sulfuric acid forming a red solution. Dissolves in potassium hydroxide in the presence of air with formation of deep red solutioncombines with halogens. Avoid antimony and chlorine trifluoridechlorine trifluoride reacts vigorously with tellurium producing flame. Fluorine and tellurium react with incandescence. Lithium silicide attacks tellurium with incandescence. Reaction with zinc is accompanied by incandescence (same potential with cadmium, only hazard is less). A vigorous reaction results when liquid tellurium is poured over solid sodium. (EPA, 1998)Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:Combustible. Finely dispersed particles form explosive mixtures in air. |
| 火灾可能性 | FIRE HAZARD: MODERATE, IN FORM OF DUST WHEN EXPOSED TO HEAT OR FLAME OR BY CHEM REACTION WITH OXIDIZING AGENTS.ELEMENTAL TELLURIUM WILL BURN SLOWLY IN AIR. |
| 健康危害 | Causes central nervous system depression. Moderate skin and eye irritant. Tellurium is capable of doing harm within the body by replacing the essential element sulfur. (EPA, 1998)Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]: |
| 危害概述 | The TLV excludes the compound hydrogen telluride (H2Te). Garlic odor of the breath, urine, and sweat are signs of tellurium absorption. Foundry workers exposed to 0.01-0.1 mg/m3 with a peak of 0.74 mg/m3 complained of metallic taste, somnolence, and garlic odor. Signs of tellurium poisoning in experimental animals include pneumonitis, hemolytic anemia, hematuria, paralysis, convulsions, and coma. In 2 cases of human poisoning after instillation of 2 grams of sodium tellurite by ureteral catheter, the patients suffered cyanosis, stupor, and signs of liver injury and died 6 hours after the accident. There have not been any reports of serious occupational illnesses or deaths. [ACGIH] Causes damage to the nervous system, liver, kidneys, and heart in animal experiments[Nordberg, p. 1217] In high-dose animal studies, tellurium produces birth defects (hydrocephalus). [Frazier] Tellurium is a hepatotoxic agent. [Zimmerman, p. 4] Tellurium is a skin and respiratory tract irritant. It can have effects on the CNS and liver. [ICSC] See Tellurium hexafluoride. |
| 反应性基团 | Metals, Less Reactive |
| Reactivity Alerts | Pyrophoric |
| OSHA Standards | Permissible Exposure Limit: Table Z-1 8-hr Time Weighted Avg: 0.1 mg/cu m. /Tellurium and compounds, as Te/ |
| Reactivity Profile | TELLURIUM is attacked by chlorine fluoride with incandescence. When tellurium and potassium are warmed in an atmosphere of hydrogen, combination occurs with incandescence [Mellor 11:40. 1946-47]. Burning tellurium produces toxic tellurium oxide gas. Avoid solid sodium, halogens, interhalogens, metals, hexalithium disilicide. Reacts with nitric acidreacts with concentrated sulfuric acid forming a red solution. Dissolves in potassium hydroxide in the presence of air with formation of deep red solutioncombines with halogens. Avoid antimony and chlorine trifluoridechlorine trifluoride reacts vigorously with tellurium producing flame. Fluorine and tellurium react with incandescence. Lithium silicide attacks tellurium with incandescence. Reaction with zinc is accompanied by incandescence (same potential with cadmium, only hazard is less). A vigorous reaction results when liquid tellurium is poured over solid sodium [EPA, 1998].Mixtures of tellurium tetrabromide or tellurium tetrachloride with ammonia produces tellurium nitride complexes that are explosive upon heating. Tellurium trioxide is a powerful oxidant, which reacts violently when heated with a variety of metallic and non metallic materials. Noncombustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. |
| Chemical Dangers | Upon heating, toxic fumes are formed. Decomposes on heating. This produces toxic fumes. Reacts vigorously with halogens and interhalogens. This generates fire hazard. Reacts with zinc with incandescence. Lithium silicide attacks tellurium with incandescence. |
| Flammable Limits | Combustible Solid |
| 消防 | Straight water streams will scatter molten tellurium oxide. Wear goggles, rubber gloves, and proper respirator with filter.Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:Use foam, carbon dioxide, dry powder. |
| 急救措施 | Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.Remove contaminated clothes. Rinse and then wash skin with water and soap.First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention . |
| 急救 | Signs and Symptoms of Acute Tellurium Exposure: Signs and symptoms of acute exposure to tellurium may include drowsiness, malaise, lassitude, weakness, and dizziness. Gastrointestinal symptoms may include nausea, vomiting, anorexia, and constipation. A metallic taste, garlicky breath, and profuse sweating may be noted. Kidney damage, liver injury, and pulmonary effects may also occur. Dermal exposure may result in dermatitis (red, inflamed skin).Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:(General first aid procedures) |
| 安全储存 | Separated from halogens and interhalogens. |
| 清理方法 | 1. VENTILATE AREA OF SPILL OR LEAK. 2. COLLECT SPILLED MATERIAL IN THE MOST CONVENIENT & SAFE MANNER & DEPOSIT IN SEALED CONTAINERS FOR RECLAMATION OR FOR DISPOSAL IN A SECURED SANITARY LANDFILL. LIQUIDS CONTAINING TELLURIUM & CMPD SHOULD BE ABSORBED IN VERMICULITE, DRY SAND, EARTH, OR A SIMILAR MATERIAL. |
| 非火灾泄漏应对 | Caution : When heated to decomposition, toxic fumes of tellurium oxide will be emitted. Avoid sources of extreme heat.Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]: |
| 泄漏处置 | Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations. |
| Preventive Measures | SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.SRP: Contaminated protective clothing should be segregated in such a manner so that there is no direct personal contact by personnel who handle, dispose, or clean the clothing. Quality assurance to ascertain the completeness of the cleaning procedures should be implemented before the decontaminated protective clothing is returned for reuse by the workers. Contaminated clothing should not be taken home at end of shift, but should remain at employee's place of work for cleaning. |
| Isolation and Evacuation | Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]: |
| Eye Prevention | Wear safety goggles or eye protection in combination with breathing protection if powder. |
| Fire Prevention | NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. |
| Inhalation Risk | Evaporation at 20 °C is negligiblea harmful concentration of airborne particles can, however, be reached quickly when dispersed. |
| 相互作用 | Selenium is known to form complexes with heavy metals in the blood and thus increase the retention time of the metals in several organs, especially in the reticulo-endothelial system. Selenium may similarly cause retention of mercury in the lung after metallic mercury (Hg0) inhalation. This study, comparing the effects of tellurium with those of selenium (both in group '6b' of the periodical system), showed that Te(IV) was as effective as Se(IV) and Se(VI) (all given in a dose of 10 mumol/kg body wt.) in retaining inhaled 203Hg0 (1.5 mumol/kg body wt.) in the lung (presumably 203Hg2+ after oxidation). Te(VI) had to be given in a dose of 100 mumol/kg body wt to produce the same effect. As in the lung, also in other organs tellurium caused a dose-dependent increase in mercury retention. At a dose level of 10 mumol Te(IV) per kg body wt. the mercury retention ratios (treated/control) were 140 for the lung and 8.6 for the whole body. The corresponding figures for Te(VI) (10, 30 and 100 mumol/kg body wt.) were 10, 73 and 120 and 3.7, 3.9 and 4.3, respectively. Retention of i.v. injected 203HgCl2 was increased by pre-administration of tellurium, again in a dose-dependent manner and Te(IV) being 3-10 times more effective than Te(VI). The kidney and the spleen were the dominant organs, as is the case after Se pretreatment. Anions of other elements, arsenite, arsenate, chromate, molybdate and wolframate (30 mumol/kg body wt.), did not affect the retention of 203Hg in lung or any other organ, or in the whole body after inhalation of 203Hg0. It is suggested that Te(IV) may easily be reduced to Te2- (in analogy with selenium) which may complex with Hg2+. The liability for Te(VI) to be reduced to Te2- appears to be approx. 10 times lower. |
| 靶器官 | Skin, central nervous system, blood |
| 不良影响 | Neurotoxin - Other CNS neurotoxin |
| 暴露途径 | The substance can be absorbed into the body by inhalation of its aerosol.inhalation, ingestion, skin and/or eye contact |
| Signs and Symptoms | Drowsiness. Metallic taste. Headache. Garlic odour. Nausea.Redness. Pain.Abdominal pain. Constipation. Vomiting. Further see Inhalation.Garlic breath, sweatingdry mouth, metallic tasteanorexia, nausea, no sweatingdermatitisIn Animals: central nervous system, red blood cell changes |
| Medical Surveillance | If the avg urinary tellurium concn for a whole shift of workers exceeds 0.05 mg/l, the working conditions for the shift should be investigated. |
| Human Toxicity Excerpts | ... EXPOSURE TO TELLURIUM FUME OCCURRED ... POURING ... TELLURIUM-COPPER ALLOY ... ONLY ... SYMPTOM ... GARLIC ODOR. TELLURIUM WAS PRESENT IN URINE IN AMT FROM 0.008 TO 0.106 MG/L. SKIN LESIONS ... DRY, SCALY ITCHING PATCHES & LOSS OF SWEAT FUNCTION ... .Tellurium is one of the rarest elements on earth. Intoxications are rare & almost exclusively occupationally exposed workers are affected. Only a few cases of non- occupational poisoning have been reported so far. Severe poisoning results in respiratory depression & circulatory collapse. After occupational exposure main symptoms & signs include loss of appetite, dryness of the mouth, suppression of sweating, a metallic taste in the mouth, & most notable, a sharp garlic odor of the breath, sweat & urine.THE GARLIC ODOR OF SWEAT WAS A GOOD INDICATOR OF THE ABSORPTION OF TELLURIUM.Exposure of iron foundry workers to concns of 0.01 & 0.1 mg Te/cu m for 22 months produced mild GI distress, the characteristic garlic odor, dryness of the mouth, metallic taste, & somnolence.For more Human Toxicity Excerpts (Complete) data for TELLURIUM, ELEMENTAL (7 total), please visit the HSDB record page. |
| Non-Human Toxicity Excerpts | ... IN CATS, CHRONIC POISONING ... INDUCED BY INJECTION OF OILY SUSPENSION OF METALLIC TELLURIUM SC OR IM, & ... FOUND AFTER 3 MO TO CAUSE DEGENERATIVE CHANGES IN GANGLION CELLS OF RETINA & IN BRAIN ... RETINAL GANGLION CELLS ... DEVELOPED HONEYCOMBED VACUOLAR DEGENERATION ... .... POISONING OF MONKEYS ... PRODUCED ENCEPHALOPATHY & CHANGES IN RETINAL GANGLION CELLS, OPTIC NERVES, OPTIC TRACTS, & IN LATERAL GENICULATE BODIES. NO DESCRIPTION ... PUBLISHED ON EFFECTS ON VISION OR ON RELATED CLINICAL OBSERVATIONS.BRAINS OF RATS TREATED ORALLY WITH 0.2 G TELLURIUM DAY FOR 2-6 MO SHOWED INCR IN LIPOFUSCIN PIGMENTS IN NEURONAL PARENCHYMA.RATS FED 0.2 G/DAY TELLURIUM SHOWED BLACK BRAIN CAUSED BY DARK TELLURIUM PARTICLES LOCALIZED IN LIPOFUSCIN GRANULES IN NEURON CYTOPLASM THROUGHOUT BRAIN, PROBABLY DUE TO EFFECTS OF TELLURIUM ON BRAIN MITOCHONDRIA.For more Non-Human Toxicity Excerpts (Complete) data for TELLURIUM, ELEMENTAL (35 total), please visit the HSDB record page. |
| Antidote and Emergency Treatment | Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if needed. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Cover skin burns with dry sterile dressings after decontamination ... . /Poison A and B/Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in respiratory arrest. Positive pressure ventilation techniques with a bag valve mask device may be beneficial. Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start an IV with D5W /SRP: "To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of fluid overload. Consider drug therapy for pulmonary edema ... . For hypotension with signs of hypovolemia, administer fluid cautiously. Watch for signs of fluid overload ... . Treat seizures with diazepam (Valium) ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Poison A and B/... BAL VALUELESS IN THERAPY OF EXPOSURE TO TELLURIUM ... IT ENHANCES ITS TOXICITY, POSSIBLY BY FORMATION OF DIMERCAPROL-TELLURIUM COMPLEX.THERE IS PRESENTLY NO ANTIDOTE FOR TELLURIUM POISONING.For more Antidote and Emergency Treatment (Complete) data for TELLURIUM, ELEMENTAL (6 total), please visit the HSDB record page. |
| Toxicity Data | LC50 (rat) > 2,420 mg/m3/4h |
| Non-Human Toxicity Values | LD50 Rat oral 83 mg/kgLD50 Rabbit oral 67 mg/kgLD50 Guinea pig oral 45 mg/kg |
| 水危害等级（WGK） | 3 |
| TSCA 清单状态 | TSCA listed |
| 毒性 | A member element of group IVa in the Periodic Table with both metallic and non-metallic properties. Tellurium compounds of biological interest include the elemental form, as well as compounds with valences of 12 (telluride), 14 (tellurite), and 16 (tellurate). Commercial applications of tellurium include its use as a coloring agent and as an alloy with other metals. Industrial hazards generally involve the volatile forms including tellurium dioxide and hydrogen telluride rather than the less toxic elemental form. Exposure to potassium tellurite may also occurthis compound is known to cause hemolysis of erythrocytes, probably via its reduction product, telluride. Other non-nervous system effects of exposure to tellurium compounds include weight loss, blue/ black discoloration of skin, and a characteristic garlic breath odor. Animal models have clearly implicated tellurium in induction of specific neuropathological findings. These include its action as a teratogen in the induction of communicating hydrocephalus (treated rats give rise to affected offspring), lipofuscinosis, and peripheral neuropathy. |
| RTECS 号 | WY2625000 |
| 包装类别 | III |
| 危险类别 | 8Acute Tox. 4 InhalationAquatic Chronic 4Lact.Repr. 1BSkin Sens. 1B |
| 储存类别 | 6.1D - Non-combustible acute toxic Cat.3toxic hazardous materials or hazardous materials causing chronic effects |
| 安全说明（S） | 45-28A |
| 海关编码 | 28045000 |
| 危险品标志 | T |
| 危险类别码（R） | 25 |
| 毒害物质数据 | 13494-80-9(Hazardous Substances Data) |
| 职业暴露等级（OEB） | D |
| 职业暴露限值（OEL） | TWA: 0.1 mg/m3 [*Note: The REL also applies to other tellurium compounds (as Te) except Tellurium hexafluoride and Bismuth telluride.] |
| 运输编号（UN） | UN 3288 6.1/PG 3 |
| 立即危及生命和健康浓度 | 25 mg Te/m3 |
急性毒性
腹腔-大鼠LDL0: 200毫克/公斤; 口服- 豚鼠 LD50: 45 毫克/ 公斤
职业标准
TLV-TWA 0.1 毫克(碲)/ 立方米； STEL 0.3 毫克(碲)/立方米
爆炸物危险特性
碲粉与空气混合可爆
可燃性危险特性
高热、明火碲粉可燃产生有毒碲氧化物烟雾
储运特性
库房通风低温干燥; 与氧化剂、食品添加剂分开存放
灭火剂
干粉、砂土
用途与应用
简介
碲是1782年赖兴施泰因在含金的矿石中发现的L1 J，也有说法是1798年M.H.克拉普罗兹在一种白色金属中首先发现了碲。碲及硒、铼等一般被称作“稀有元素”、“分散元素”或“稀散金属”。 它在地壳中平均丰度值很低(6×10-5)，碲与镉、锗、镓、硒、铟、铊、钪、铼等均属分散元素。在自然界，碲矿物除了自然碲外，主要是与Au、Ag和铂族元素以及Pb、Bi、Cu、Fe、Zn、Ni等金属元素形成碲化物、碲硫(硒)化物以及碲的氧化物和含氧盐等矿物种类L2 J。
应用
稀散元素碲被誉为“现代工业、国防与尖端技术的维生素，创造人间奇迹的桥梁”，“是当代高技术新材料的支撑材料”。这是因为随着宇航、原子能、电子工业等领域对包括碲在内的稀散金属的需求与日俱增，使得碲已经成为电子计算机、通讯及宇航开发、能源、医药卫生所需新材料的支撑材料。
用途
供半导体器件、合金、化工原料及铸铁、橡胶、玻璃等工业作添加剂用。
用途
用以制备碲化合物。并用作半导体研究材料。
用途
用于碲化合物的制备，还用作催化剂
用途
碲加到钢中，可增加钢得延展性；铸铁中的痕量碲可使铸件表面坚硬、耐磨；碲还用作电池的极板印刷铅字，以及蓝、棕、红色玻璃的着色剂。
用途
用作陶瓷与玻璃的着色剂、橡胶的硫化剂、石油裂化的催化剂等，也用于制癸、合金，是极有前途的半导体材料 用于碲化合物的制备，还用作催化剂
制备与合成方法
生产方法
以碲粉为原料，用多硫化钠抽提精制而得，制得高纯碲纯度为99.999%。
生产方法
将铜电解过程所得含碲阳极泥焙烧物用碱处理，制成粗亚碲酸碱溶液(PH＞10.8)，加入硫化碱，使铅、铜、银、铁等变成硫化物而沉淀分离。滤液用盐酸中和则沉淀出二氧化碲。过滤。把二氧化碲溶于6 mol／L盐酸中(碲的浓度为200 g／L)并加热至90℃，在每升溶液中加入13g盐酸羟胺，将杂质硒沉淀过滤分离除去，将用水和稀硫酸洗涤过的二氧化硫气体通入上述滤液中，使碲沉淀，经过滤、水洗、干燥得到碲，再经多硫化钠抽提法提纯，制得碲成品。