2,2′-Dihydroxy-4,4′-dimethoxybenzophenone

274.26900

274.27

205-027-3

7813J9CS1G

40149

DTXSID6038875

Crystals

2914509090

75.99000

2.34600

DryPowder

1.291g/cm3

139.5 °C

439.3ºC at 760mmHg

164.4ºC

1.605

H2O: negligible soluble

Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.

2.49E-08mmHg at 25°C

Henry's Law constant = 1.17X10-10 atm-cu m/mol at 25 °C (est)

II; III

4.1

NONH for all modes of transport

3

R36/37/38

S22-S26-S37/39

DJ0900000

Xi

Stable under normal temperatures and pressures.

P261-P305 + P351 + P338

H315-H319-H335

SRP: 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 quality; potential migration in air, soil or water; effects on animal, aquatic and plant life; and conformance with environmental and public health regulations. If it is possible or reasonable use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination.

Cosmetic Ingredient Review; Annual Review of Cosmetic Ingredient Safety Assessments - 2002-2003. Int J Toxicol 24 (Suppl 1): 1-102 (2005)[Available from, as of November 21, 2018: https://www.cir-safety.org/ingredients]

|Warning|H315 (97.83%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 198 companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

2,2'-Dihydroxy-4,4'-dimethoxybenzophenone concentrations of 0.2, 0.2, 0.3, 0.1 and 0.07% were reported in colognes and toilet waters, perfumes, nail polish and enamel, aftershave lotion and face and neck skin preparations, respectively; sampling was conducted in 2002(SRC).

IDENTIFICATION AND USE: 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone (Benzophenone-6) is used as a cosmetic ingredient in a range of cosmetic products. HUMAN STUDIES: There are no data available. ANIMAL STUDIES: Benzophenone-6 was hepatotoxic in guinea pigs when given i.p. for 15 days at 5 mg/kg. Benzophenone-6 was nonmutagenic when assayed directly and was mutagenic with metabolic activation in Salmonella strain TA1537. Benzophenone-6 did not induce sister chromatid exchanges in vivo in the bone marrow of Chinese hamsters.

2,2'-Dihydroxy-4,4'-dimethoxybenzophenone's production and use as a ultraviolet light absorber with special applications in paints and plastics(1) and limited use as a cosmetic ingredient(2) may result in its release to the environment through various waste streams(SRC).

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 800(SRC), determined from a structure estimation method(2), indicates that 2,2'-dihydroxy-4,4'-dimethoxybenzophenone is expected to have low mobility in soil(SRC). Volatilization of 2,2'-dihydroxy-4,4'-dimethoxybenzophenone from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 1.2X10-10 atm-cu m/mole(SRC), developed using a fragment constant estimation method(2). 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 7.4X10-9 mm Hg at 25 °C(SRC), determined from a fragment constant method(2). Utilizing the Modified MITI test, 0% of the Theoretical BOD was reached in 4 weeks(3) indicating that biodegradation is not an important environmental fate process in soil(SRC).|AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 800(SRC), determined from a structure estimation method(2), indicates that 2,2'-dihydroxy-4,4'-dimethoxybenzophenone is expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is not expected(3) based upon an estimated Henry's Law constant of 1.2X10-10 atm-cu m/mole(SRC), developed using a fragment constant estimation method(2). According to a classification scheme(4), an estimated BCF of 45(SRC), from an estimated log Kow of 3.90(2) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is moderate(SRC). Utilizing the Modified MITI test, 0% of the Theoretical BOD was reached in 4 weeks(5) indicating that biodegradation is not an important environmental fate process in water(SRC).|ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, which has an estimated vapor pressure of 7.4X10-9 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), is expected to exist solely in the particulate phase in the ambient atmosphere. Particulate-phase 2,2'-dihydroxy-4,4'-dimethoxybenzophenone may be removed from the air by wet and dry deposition(SRC). 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone absorbs UV light at wavelengths of 284 and 340 nm(3) and, therefore, may be susceptible to direct photolysis by sunlight(SRC).

2,2'-Dihydroxy-4,4'-dimethoxybenzophenone is not expected to undergo hydrolysis in the environment due to the lack of functional groups that hydrolyze under environmental conditions(1). 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone absorbs UV light at wavelengths of 284 and 340 nm(2) and, therefore, may be susceptible to direct photolysis by sunlight(SRC).

An estimated BCF of 45 was calculated in fish for 2,2'-dihydroxy-4,4'-dimethoxybenzophenone(SRC), using an estimated log Kow of 3.90(1) and a regression-derived equation(1). According to a classification scheme(2), this BCF suggests the potential for bioconcentration in aquatic organisms is moderate(SRC).

Using a structure estimation method based on molecular connectivity indices(1), the Koc of 2,2'-dihydroxy-4,4'-dimethoxybenzophenone can be estimated to be 800(SRC). According to a classification scheme(2), this estimated Koc value suggests that 2,2'-dihydroxy-4,4'-dimethoxybenzophenone is expected to have low mobility in soil(SRC).

The Henry's Law constant for 2,2'-dihydroxy-4,4'-dimethoxybenzophenone is estimated as 1.2X10-10 atm-cu m/mole(SRC) developed using a fragment constant estimation method(1). This Henry's Law constant indicates that 2,2'-dihydroxy-4,4'-dimethoxybenzophenone is expected to be essentially nonvolatile from water and moist soil surfaces(2). 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 7.4X10-9 mm Hg(SRC), determined from a fragment constant method(1).

According to the 2016 TSCA Inventory Update Reporting data, 1 reporting facility estimated the number of persons reasonably likely to be exposed during the manufacturing, processing, or use of 2,2'-dihydroxy-4,4'-dimethoxybenzophenone in the United States is not known or reasonably ascertainable; the data may be greatly underestimated due to confidential business information (CBI) or unknown values(1).|Occupational exposure to 2,2'-dihydroxy-4,4'-dimethoxybenzophenone may occur through inhalation and dermal contact with this compound at workplaces where 2,2'-dihydroxy-4,4'-dimethoxybenzophenone is produced or used. Limited use data indicate that the general population may be exposed to 2,2'-dihydroxy-4,4'-dimethoxybenzophenone via dermal contact with consumer products containing 2,2'-dihydroxy-4,4'-dimethoxybenzophenone. (SRC)

2,2'-Dihydroxy-4,4'-dimethoxybenzophenone was present at a mean concentration of 0.11 ng/mL in 2 of 34 urine samples from Tunisian women, collected from May to October 2012(1). The compound was tested for but not detected in urine samples from the general population in Seoul and Gyeonggi province, Korea; sampling was conducted between July and August, 2014(2).|Biomonitoring of human exposure to bisphenol A diglycidyl ethers (BADGEs; resin coating for food cans), p-hydroxybenzoic acid esters (parabens; preservatives), benzophenone-type UV filters (BP-UV filters; sunscreen agents), triclosan (TCS; antimicrobials), and triclocarban (TCC; antimicrobials) has been investigated in western European countries and North America. Nevertheless, little is known about the exposure of Greek populations to these environmental chemicals. In this study, 100 urine samples collected from Athens, Greece, were analyzed by liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) for the determination of total concentrations of five derivatives of BADGEs, six parabens and their metabolite (ethyl-protocatechuate), five derivatives of BP-UV filters, TCS, and TCC. Urinary concentrations of BADGEs, parabens, ethyl-protocatechuate, BP-UV filters, TCS and TCC (on a volume basis) ranged 0.3-20.9 (geometric mean: 0.9), 1.6-1010 (24.2), <2-71.0 (2.1), 0.5-1120 (4.4), <0.5-2580 (8.0) and <0.5-1.9 (0.6) ng/mL, respectively. All 19 target chemicals were found in urine, and the highest detection rates were observed for methyl paraben (100%), bisphenol A bis (2,3-dihydroxypropyl) ether (90%), ethyl paraben (87%), 2,4-dihydroxybenzophenone (78%), propyl paraben (72%), and TCS (71%). Estimated daily intakes (EDIurine), calculated on the basis of the measured urinary concentrations, ranged from 0.023 ug/kg bw/day for sum5BADGEs to 31.4 ug/kg bw/day for sum6Parabens. /Benzophenones/

Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR if necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Poisons A and B/|Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). 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 0.9% saline (NS) 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 ... . /Poisons 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 severe respiratory distress. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Consider administering a beta agonist such as albuterol for severe bronchospasm ... . Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start IV administration of D5W TKO /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Watch for signs of fluid overload ... . Treat seizures with diazepam (Valium) or lorazepam (Ativan) ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Poisons A and B/

Paint and coating manufacturing|Methanone, bis(2-hydroxy-4-methoxyphenyl)-: ACTIVE

The population is continuously exposed to endocrine disrupting chemicals (EDCs). This has influenced an increase in diseases and syndromes that are more frequent nowadays. Therefore, it is necessary to develop new analytical procedures to evaluate the exposure with the ultimate objective of establishing, in an accurate way, relationships between EDCs and harmful health effects. In the present work, a new method based on a sample treatment by dispersive liquid-liquid microextraction (DLLME) for the extraction of six parabens (methyl-, ethyl-, isopropyl-, propyl-, isobutyl and butylparaben), six benzophenones (benzophenone-1, benzophenone-2, benzophenone-3, benzophenone-6, benzophenone-8 and 4-hydroxybenzophenone) and two bisphenols (bisphenol A and bisphenol S) in human urine samples, followed by gas chromatography-tandem mass spectrometry (GC-MS/MS) analysis is proposed. An enzymatic treatment allows determining the total content of the target EDCs. The extraction parameters were accurately optimized using multivariate optimization strategies. Ethylparaben ring-(13)C6 and bisphenol A-d16 were used as surrogates. Found limits of quantification ranging from 0.2 to 0.5 ng mL(-1) and inter-day variability (evaluated as relative standard deviation) ranging from 2.0% to 14.9%. The method was validated using matrix-matched standard calibration followed by a recovery assay with spiked samples. Recovery rates ranged from 94% to 105%. A good linearity, for concentrations up to 300 ng mL(-1) for parabens and 40 ng mL(-1) for benzophenones and bisphenols, respectively, was obtained. The method was satisfactorily applied for the determination of target compounds in human urine samples from 20 randomly selected individuals.|In the present work, a new method based on a sample treatment by dispersive liquid-liquid microextraction (DLLME) for the extraction of six bisphenols (bisphenol A, bisphenol S, and monochloro-, dichloro-, trichloro-, and tetrachlorobisphenol A), four parabens (methyl-, ethyl-, propyl-, and butylparaben), and six benzophenones (benzophenone-1, benzophenone-2, benzophenone-3, benzophenone-6, benzophenone-8, and 4-hydroxybenzophenone) in human urine samples, followed by ultrahigh-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) analysis, is validated. An enzymatic treatment allows determining the total content of the target EDCs. The extraction parameters were accurately optimized using multivariate optimization strategies. Ethylparaben ring-(13)C6, benzophenone-d10, and bisphenol A-d16 were used as surrogates. Limits of quantification ranging from 0.1 to 0.6 ng mL(-1) and interday variabilities (evaluated as relative standard deviations) from 2.0 to 13.8% were obtained. The method was validated using matrix-matched standard calibration followed by a recovery assay with spiked samples. Recovery rates ranged from 94 to 106%. A good linearity, for concentrations up to 300 ng mL(-1) for parabens and 40 ng mL(-1) for benzophenones and bisphenols, was also obtained. The method was satisfactorily applied for the determination of target compounds in human urine samples from 20 randomly selected individuals.|Benzophenone-UV filters (BP-UV filters) are extensively used in cosmetics products to avoid damaging effects of UV radiation. Despite their low toxicity, many research papers indicate that BP-UV filters are weak endocrine disruptors (EDCs). There are clear relationships between BP-UV filters exposure and several health disorders such as carcinogenesis and malformations observed in animals. In the present work, a new sample treatment procedure by dispersive liquid-liquid microextraction (DLLME) is proposed for the extraction of six BPs, namely benzophenone-1 (BP-1), benzophenone-2 (BP-2), benzophenone-3 (BP-3), benzophenone-6 (BP-6), benzophenone-8 (BP-8) and 4-hydroxybenzophenone (4-OH-BP), in human serum samples, followed by ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) analysis. The method involves an enzymatic treatment to quantify the total content (free plus conjugated species) of BP-UV filters in serum. The extraction parameters were accurately optimized using multivariate optimization approach. Benzophenone-d10 (BP-d10) was used as surrogate. Limits of quantification (LOQs) ranged from 0.4 to 0.9 ng mL(-1) and inter-day precision (evaluated as relative standard deviation) ranged from 1.9% to 13.1%. The method was validated using matrix-matched calibration and a recovery assay. Recovery rates for spiked samples ranged from 97% to 106%, and acceptable linearity was obtained up to concentrations of 40 ng mL(-1). The method was applied to the determination of the target compounds in human serum samples from 20 randomly selected anonymous individuals.|Benzophenones (BPs) are a family of compounds widely used to protect the skin and hair from UV irradiation. Despite human exposure to BPs through dermal application of products containing sunscreen agents and the increasing evidence that BPs are able to interfere with endocrine systems, few studies have examined the occurrence of BPs in humans. In this work, we propose a new liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to determine six BPs, namely, benzophenone-1 (BP-1), benzophenone-2 (BP-2), benzophenone-3 (BP-3), benzophenone-6 (BP-6), benzophenone-8 (BP-8) and 4-hydroxybenzophenone (4-OH-BP) in human placental tissue samples. The method involves an extraction step of the analytes from the samples using ethyl acetate, followed by a clean-up step using centrifugation prior to their quantification by LC-MS/MS using an atmospheric pressure chemical ionization (APCI) interface in the positive mode. Benzophenone-d(10) (BP-d(10)) was used as surrogate. Found detection limits (LOD) ranged from 0.07 to 0.3 ng g(-1) and quantification limits (LOQ) from 0.3 to 1.0 ng g(-1), while inter- and intra-day variability was under 5%. The method was validated using standard addition calibration and a recovery assay. Recovery rates for spiked samples ranged from 98 to 104%. This method was satisfactorily applied for the determination of BPs in 16 placental tissue samples collected from women who live in Granada (Spain).

Cosmetics -> Uv absorber