This fact sheet answers the most frequently asked health questions (FAQs) about perchlorates. For more information, call the ATSDR Information Center at 1-800-232-4636. This fact sheet is one in a series of summaries about hazardous substances and their health effects.erchlorates are colorless salts that have no odor. There are five perchlorate salts that are manufactured in large amounts: magnesium perchlorate, potassium perchlorate, ammonium perchlorate, sodium perchlorate, and lithium perchlorate. Perchlorate salts are solids that dissolve easily in water.
Instructions. 1  1. First of all, start with few and easy sign languages. Introducing too many signs at one time will be a useless effort. 2  2. Introduce the signs to your children in such a way as âyou say the word.â It helps in associating the word with the sign language.
Four months. From four months your baby will react excitedly to sounds, and she may smile when she hears your voice (NHS 2013b) . She may start watching your mouth intently when you speak, and try to copy you. She may start to utter consonant sounds such as m and b (ICAN 2011) . Six months. At six months or seven months your baby will realise where sounds come from, and she'll turn quickly towards new ones (NHS 2013b, Sheridan 2008: 15) .