Sodium Tetraborate｜Huagongshe

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HCID 10219853Erstellt: 27. Oktober 2026

Sodium Tetraborate

https://huagongshe.com/de/chemical/10219853

Molekülstruktur von Sodium Tetraborate

Identifikatoren & physikalische Daten

CAS No.	1310383-93-7
Summenformel	B4Na2O7
Durchschnittliche Molmasse	201,2 g/mol
Monoisotopische Masse	201,9811625 g/mol
SMILES	[Na+].[Na+].[O-]B1OB2OB([O-])OB(O1)O2
InChIKey	UQGFMSUEHSUPRD-UHFFFAOYSA-N
PubChem CID	10219853
ChEMBL	CHEMBL1076681
EC No.	215-540-4
DTXSID	DTXSID101014358

Chemische & physikalische Eigenschaften

Polarare Oberfläche (TPSA)	92,3
H-Brücken-Donoren	0
H-Brücken-Akzeptoren	7
Frei drehbare Bindungen	0
Schwere Atome	13
Formalladung	0
Komplexität	121
Stoffklassen	Metals -> Metalloid Compounds (Boron)
Kosmetika	Buffering
pH	pH = 9.3 at 20 °C (3% solution)
Pestizide	Herbicides, Insecticides, MolluscicidesActive substance -> EU Pesticides database: Not approved
Geruch	Odorless
Dichte	2.367White crystals or powder, odorlessdensity: 1.73 20 °C/4 °Closes water of crystallization when heated, with melting between 75 and 320 °Cfuses to a glassy mass at red heat (borax glass)effloresces slightly in warm dry airsoluble in water, glycerolinsoluble in alcohol /Sodium tetraborate decahydrate/Relative density (water = 1): 2.42.37
Color/Form	Colorless glassy solidhygroscopicLight grey, vitreous granulesWhite to gray powderbecomes opaque on exposure to air
Löslichkeit	Water solubility: 3.1% at 25 °C2.5% at 20 °CSolubility at 25 °C: 16.7% in methanol30% in ethylene glycol40.6 g/L in formamideSolubility in water, g/100ml at 20 °C: 2.564%
Corrosivity	Solutions are not a corrosion hazard to ferrous metals
Siedepunkt	1,575 °C (decomposes)2867 °F (decomposes)
Decomposition	When heated to decomposition it emits toxic fumes of boron.1575 °C. This produces toxic fumes including sodium oxide.
Schmelzpunkt	Between 171 °C and 175 °C with decomposition743 °C742 °C1366 °F

Sicherheit & Vorschriften

GHS-Einstufung	DangerH360FD: May damage fertilityMay damage the unborn child [Danger Reproductive toxicity]P203, P280, P318, P405, and P501 (click each P-code to see the statement)H319 (53.2%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]P203, P264+P265, P280, P305+P351+P338, P318, P337+P317, P405, and P501 (click each P-code to see the statement)
Regulatorische Informationen	Chemical: Boron sodium oxide (B4Na2O7)Regulation (EC) No 257/2010Boron sodium oxide (B4Na2O7) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Boron sodium oxide (B4Na2O7) 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)2004/129/ECStatus: Active Update: 11-03-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/15357Substance: Disodium tetraborate, anhydrous
Weitere Sicherheitsinformationen	IMAP assessments - Salts of boric acid: Human health tier II assessment
Brandgefahren	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.
Brandpotenzial	Noncombustible
Gefahrenübersicht	The basis for the TLV for inorganic borate compounds is irritation of the nose and respiratory tract. Studies of workers exposed to sodium borate dusts found no evidence of pulmonary function or reproductive impairment. [ACGIH] Borate dust is moderately irritating to the skin, but it is not absorbed well by intact skin. Inhalation of borate dust can cause nasal irritation, cough, and chest tightness. [EPA Pesticides] In high-dose reproductive studies of animals, boric acid causes testicular damage and fetal loss. [Frazier, p. 252-3]
EG-Einstufung	R: 60-61S: 53-45Symbol: T
Special Reports	USEPA/OWRSQuality Criteria for Water 1986 Boron (1986) EPA 440/5-86-001

FIFRA-Anforderungen

As the federal pesticide law FIFRA directs, EPA is conducting a comprehensive review of older pesticides to consider their health and environmental effects and make decisions about their future use. Under this pesticide reregistration program, EPA examines health and safety data for pesticide active ingredients initially registered before November 1, 1984, and determines whether they are eligible for reregistration. In addition, all pesticides must meet the new safety standard of the Food Quality Protection Act of 1996. Borax is found on List A, which contains most food use pesticides and consists of the 194 chemical cases (or 350 individual active ingredients) for which EPA issued registration standards prior to FIFRA '88. Case No: 0024Pesticide type: insecticide, fungicide herbicideRegistration Standard Date: 11/01/85Case Status: RED Approved 9/93OPP has made a decision that some/all uses of the pesticide are eligible for reregistration, as reflected in a Reregistration Eligibility Decision (RED) document .Active ingredient (AI): sodium tetraborate anhydrousData Call-in (DCI) Date(s): 2/16/94AI Status: OPP has completed a Reregistration Eligibility Decision (RED) for the case/AI.Based on the reviews of the generic data for the active ingredients of boric acid and its sodium salts, the Agency has sufficient information on the health effects of boric acid and its sodium salts and their potential for causing adverse effects in fish and wildlife and the environment. Therefore, the Agency concludes that products containing boric acid and its sodium salts for all uses are eligible for reregistration. The Agency has determined that boric acid and its sodium salts, labeled and used as specified in the RED document, will not pose unreasonable risks or adverse effects to humans or the environment.Sodium tetraborate (when limited to no more than 2% of pesticide formulation) is exempted from the requirement of a tolerance when used as a buffering agent or corrosion inhibitor in accordance with good agricultural practice as inert (or occasionally active) ingredients in pesticide formulations applied to growing crops only.An exemption from the requirement of a tolerance is established for residues of the pesticidal chemical boric acid and its salts, borax (sodium borate decahydrate), disodium octaborate tetrahydrate, boric oxide (boric anhydride), sodium borate and sodium metaborate, in or on raw agricultural commodities when used as an active ingredient in insecticides, herbicides, or fungicides preharvest or postharvest in accordance with good agricultural practices.

Erste-Hilfe-Maßnahmen	Fresh air, rest.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. Do NOT induce vomiting. Refer immediately for medical attention.

Entsorgungsverfahren

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air qualitypotential migration in soil or watereffects on animal, aquatic, and plant lifeand conformance with environmental and public health regulations.

Verschüttetes entsorgen	Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. 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.The worker should wash daily at the end of each work shift.Workers whose clothing may have become contaminated should change into uncontaminated clothing before leaving the work premises.SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.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.

Ökotoxizitätswerte

LC50 Chironomus decorus (Midge, fourth instar) 1,376 mg B/L/48 hr /Conditions of bioassay not specified in source examined/LC50 Daphnia magna (Water flea, neonate) 141 mg B/L/48 hr /Conditions of bioassay not specified in source examined/LC50 Gambusia affinis (Western mosquitofish) 346 mg/L/24 hrstatic /formulated product/LC50 Gambusia affinis (Western mosquitofish) 236 mg/L/48 hrFor more Ecotoxicity Values (Complete) data for SODIUM TETRABORATE (10 total), please visit the HSDB record page.

Unerwünschte Wirkungen	Reproductive Toxin - A chemical that is toxic to the reproductive system, including defects in the progeny and injury to male or female reproductive function. Reproductive toxicity includes developmental effects. See Guidelines for Reproductive Toxicity Risk Assessment.

Ökotoxizitätsauszüge

/AQUATIC SPECIES/ Acute toxicity evaluations of waterborne sodium tetraborate resulted in 48 hr LC50 values of 141 and 1376 mg boron for neonate Daphnia magna and fourth instar Chironomus decorus, respectively. Chronic sublethal studies demonstrated a significant decrease in C. decorus growth rate at 20 mg B/L. Further studies showed that increasing water hardness (10.6 to 170 mg/L as CaCo3) and sulfate (10.2 to 323.4 mg SO4-2/L) concentrations did not affect boron toxicity to D. magna. These results, in conjunction with a review of the literature, suggest that aquatic macrophytes may be more sensitive to boron than macroinvertebrates.../AQUATIC SPECIES/ Laboratory studies were undertaken to evaluate the toxicity of waterborne boron to two key freshwater macroinvertebrates and to evaluate the effects of water hardness and sulfate on boron toxicity. Acute toxicity evaluations of waterborne sodium tetraborate resulted in 48 hr LC50 values of 141 and 1376 mg B/L for neonate Daphnia magna and fourth instar Chironomus decorus, respectively. Chronic sublethal studies demonstrated a significant decrease in C. decorus growth rate at 20 mg B/L. Further studies showed that increasing water hardness (10.6 to 170 mg/L as CaCO3) and sulfate (10.2 to 325.4 mg SO4(-2)/L) concentrations did not affect boron toxicity to D. magna.

Signs and Symptoms	Cough. Sore throat. Shortness of breath.Redness.Redness. Pain.Nausea. Vomiting. Abdominal pain. Diarrhoea. Weakness. Drowsiness.irritation eyes, skin, upper respiratory systemdermatitisepistaxis (nosebleed)cough, dyspnea (breathing difficulty)

Natural Pollution Sources	SODIUM TETRABORATE, Na2B4O7, USUALLY OCCURS AS BORAX, WHICH IS THE DECAHYDRATE MINERAL DEPOSITED BY EVAPORATION OF SALT LAKES IN TERTIARY PERIODS. IT IS ALSO MINED AS MINERALS COLEMANITE ... & KERNITE ...

Human Toxicity Excerpts

/HUMAN EXPOSURE STUDIES/ This study (1) charted chemosensory feel, denoted chemesthesis here, to dusts of calcium oxide (1 to 5 mg/m(3)), sodium tetraborate pentahydrate [sodium borate] (5 to 40 mg/m(3)), and calcium sulfate (10 to 40 mg/m(3))(2) examined correlates of the chemesthetic sensationsand (3) sought to illuminate the basis for potency. Twelve screened men exercised against a light load while they breathed air in a dome fed with controlled levels of dust for 20 min. Measured parameters included nasal resistance, nasal secretion, minute ventilation, heart rate, blood oxygenation, mucociliary transport time, and chemesthetic magnitude, calibrated to pungency of carbon dioxide. Subjects registered time-dependent feel from exposures principally in the nose, secondarily in the throat, and hardly in the eyes. Calcium oxide had the greatest potency, followed by sodium borate, with calcium sulfate a distant third. Of the physiological parameters, amount of secretion showed the best association with chemesthetic potency. That measure, as well as mucociliary transport time and minute ventilation, went into calculation of mass of dust dissolved into mucus. The calculations indicated that the two alkaline dusts increased in equal molar amounts with time. At equal molar concentrations, they had, to a first approximation, equal chemesthetic magnitude. On the basis of mass concentration in air or dissolved into mucus, calcium oxide and sodium borate differed in potency by a factor just above five, equal to the difference in their molecular weights./SIGNS AND SYMPTOMS/ Symptoms of poisoning: Nausea, diarrhea, rashes, CNS depression, and coma./SIGNS AND SYMPTOMS/ An intravenous dose of 14-20 g of sodium borate was administered for the purposes of neutron capture therapy to 10 patients, who experienced immediate nausea, vomiting, defecation, and occasionally seizures and respiratory depression./SIGNS AND SYMPTOMS/ Inhalation: Cough, shortness of breath, sore throat, nose bleed. /from table/For more Human Toxicity Excerpts (Complete) data for SODIUM TETRABORATE (11 total), please visit the HSDB record page.